Sort by
Relevancy

Free Stories

100%
Camming Down the Rabbit Hole Ch. 12
We woke up many hours later, still intertwined, my morning wood throbbing as Ellie slid inside my panties and wrapped her hand around it. This was a much better way to wake up than usual, and we proceeded to have a really relaxed slow fuck. She reached a much more low key orgasm but I knew I wouldn’... Read full Story
Dani_does_Dallas 2022-05-09 5,559 Crossdresser solo Amateur Cumshot Outdoor Masturbation Blowjob Shemale and Girl Sex Toys self sucking pov cum in mouth webcams
66%
A Ski Bunny is Born
AQToday I am a fully-fledged she-male, living with my girl friend Kim, who, to me, is the most beautiful girl in the world. We live as sisters to the outside world, but we are in fact passionate lovers. This whole true story started some 5 years ago, let us tell it to you. At that time I was a si... Read full Story
shemale lover 2012-06-21 11,607 anal sex Cumshot Lingerie oral sex Sex Toys
100%
Dream Bride Tranny
My niece Avril and I rushed along the ground floor corridor of the hotel and made sure none of our relatives were watching us as we disappeared into the room. Inside, we were met by Miss Anne of the Kinky Brides Group, who immediately ordered Avril to strip me naked. "Please, not today,&q... Read full Story
shemale lover 2012-11-13 5,718 anal cum oral Lingerie
100%
Camming Down the Rabbit Hole Ch. 10
As the sun beamed in through a gap in the curtains my now familiar morning wood strained at the silk of my nightwear. How was it that no matter how hard I came the night before it would wake up eager and ready to go. As had become customary my mind would be filled with the events of the previous nig... Read full Story
Dani_does_Dallas 2022-04-12 3,701 Crossdresser solo Amateur Cumshot Masturbation Lingerie Sex Toys Homemade self sucking cum in mouth webcams
100%
Camming Down the Rabbit Hole Ch. 11
I sat there for some time, my phone still in hand. I couldn’t fully comprehend the situation and where I was. All this started when I was put on furlough and thought I would be losing my job, an idea born out of boredom, hornieness and desperation. What started as a regular cam show with a guy hopin... Read full Story
Dani_does_Dallas 2022-04-25 4,441 Crossdresser Amateur Cumshot Masturbation Blowjob Uniform Lingerie Shemale and Girl Sex Toys Homemade self sucking pov cum in mouth
100%
the orgiastic fever of a trans-milf
Simulating a woman, or the orgiastic fever of a trans-milf It's been two months since I moved to the megapolis, where I've discovered several places where the third gender goes. One of my first explorations was a huge lingerie shop in a MALL; I wanted to buy some sexy stuff without being noticed ... Read full Story
hippocampus_171 2024-09-04 1,940 anal Amateur Cumshot Creampie Shemale Fucks Guy Latex Sex Toys Mature small cock
93%
Sissy Maddie's New Apartment Gangbang
I’d just moved into the big city. Me on my own in a cheap apartment block. The flat was nothing special by any means, and the room next to mine seemed to be noisy with parties. But I was glad to be on my own. I had almost finished unpacking my belongings when I came across my stash of female clothi... Read full Story
sissymaddiex 2020-09-25 10,313 Crossdresser Amateur Group Sex Cumshot Bareback Creampie Blowjob gangbang Lingerie Homemade sissy cum in mouth double anal
100%
Camming Down the Rabbit Hole Ch. 07
Opening my eyes I struggled a little as the residual cum on my face from last night’s show hadn’t been fully wiped off, I felt the dry and crusty leftovers crinkle on my skin, but couldn’t help but smile to myself as I remembered how it had got there. The intensity of that orgasm had been on another... Read full Story
Dani_does_Dallas 2021-10-22 6,532 Stockings Small Tits Crossdresser Amateur Cumshot Masturbation Fetish Lingerie Sex Toys Homemade self sucking pov cum in mouth
100%
Fantasy 2
THE GANG BANG 02: I walk into an adult theater dressed in a black short dress with black high heels. Under my dress, I have on a black bra, black crotch less panties, a black baby doll, and a black Lace Garter with Stocking. I pay my fee into the theater and walk through the door to the seating ar... Read full Story
Carrie Bangs 2024-07-23 3,466 anal Crossdresser Bareback Creampie gangbang Lingerie Interracial sissy double anal
100%
Camming Down the Rabbit Hole Ch. 09
As per my previous mornings recently, I stirred and rubbed the sleep from my eyes, that delicious feeling of my silk night ware stretching over my taught nipples and my morning wood throbbing in its lace enclosure. The urge to touch myself was palpable, it seemed no matter how hard I came the night ... Read full Story
Dani_does_Dallas 2022-03-22 3,703 Stockings Crossdresser solo Amateur Cumshot Masturbation Lingerie Sex Toys Homemade self sucking pov cum in mouth webcams
78%
A Little Girl Forever
Since I was a little girl I dressed in my sister's clothes, she knew it and she kept clothes for me and sometimes she bought clothes thinking about me. She was my accomplice and still is. When I was alone I dressed totally as a woman and I felt totally satisfied and realized as such, this included m... Read full Story
Mabel Cecilia 2019-05-06 8,273 Small Tits Crossdresser Amateur Cumshot Latina Masturbation Creampie Blowjob blonde Lingerie Shemale and Girl Guy Fucks Shemale Sex Toys Mature self sucking Solo Shemale cum in mouth double anal shemale + shemale
85%
BANGING AROUND BANGKOK
BANGING AROUND BANGKOK: THE AMOROUS ADVENTURES OF CAITLIN "MEOW" MORRISON after living and working in Thailand/SE Asia for many years i decided to write an erotic story based on some of the people i have known, venues and places i have been, and the P4P night-scene where i spent way too much... Read full Story
bkkldby 2019-06-17 14,387 first time Teen (18+) Amateur Group Sex Big Tits Cumshot Outdoor Bareback Blowjob Big Cock Asian lesbian public place
100%
A Perfect Pandemic: A Transsexual Transition in a Troubled Time
A Perfect Pandemic A Transsexual Transition in a Troubled Time A Novelette by Alexandra Rios Text Copyright Reserved © August, 2021 Dedication Transgender Day of Remembrance is a solemn occasion. I am offering “A Perfect Pandemic” for free as an antidote to the fear, phobia, discrimination, d... Read full Story
the greatest liar 2021-11-16 6,305 Teen (18+) Crossdresser Group Sex Big Tits Bareback Creampie Big Cock gangbang domination Guy Fucks Shemale Interracial double anal webcams
50%
LE PROGRAMME D'ÉCHANGE SISSY ⚧️ ⚧️
Kristy a travaillé pour Le Matriarcat. Cela semblait plus officiel que ça ne l'était vraiment. Comme si c'était un "Nouvel Ordre Mondial". C'était en fait un club dirigé par des femmes spécialisées dans certains services que les hommes paient grassement. Cela pourrait être appelé prostitution selon ... Read full Story
Femboy 2021 2023-03-25 1,388 Teen (18+) Cumshot Big Cock gangbang Interracial Sex Toys gloryhole cum in mouth femination forcé poule mouillé Maitress bdsm poule mouillé
85%
My Awkward Phase
My Awkward Phase ©Alexandra Rios 2019 The greatest lie is that what happens in high school doesn't matter, because life begins in college. I pretended to agree, although I never believed it, for I was the world's greatest liar. Wannabees I was hanging out with my friends Quinn, Barb and Anne ... Read full Story
the greatest liar 2019-06-14 12,159 Small Tits anal sex Latina Masturbation Bareback Creampie Blowjob Big Cock transformation gangbang Shemale and Girl Guy Fucks Shemale Sex Toys Ass to Mouth cosplay hormones high school real life situations
62%
Crossdressed Lana - Hannover, Germany
Crossdressed Lana - Hannover, Germany Very Sexy & Compliant Sub-Slut Is Searching For Kinky BDSM Live-Dates At Hannover, Germany!!! I Am Bisexual And Want Men, Woman, Couples And Trans For Outdoor, Swingerclub, Porncinema And Public Sex. I Love To Wear Very Hot & Sexy Clothes Like Lingerie, Stoc... Read full Story
Crossdressed Lana 2020-02-06 4,501 Stockings Crossdresser Group Sex Outdoor Bareback Fetish Blowjob gangbang Lingerie domination Latex Sex Toys double anal
50%
The Greatest Lie Part 15
I think that if you could get honest answers, a lot of heterosexual guys would probably admit to having had at least a passing desire to be a girl. If they were honest, they would probably admit they thought of it "when I first noticed a girl's breasts" or "when I first felt a girl or... Read full Story
shemale lover 2012-01-20 6,415 anal hardcore erotic encounters fantastic
96%
Family Frolic
FRIDAY My sister and her husband wanted to take a few weeks off in the sun and asked me to look after their kids for a while. I'd move out of my tiny apartment and into their house for the duration. As I was still living off my severance and they had a nice spread with an indoor pool and a h... Read full Story
shemale lover 2012-01-14 31,299 strapon porn
100%
Gangbanged at the beach
My BBC friend took me to the beach, where people make sex. We arrived in his van. I was in the back of the van, chained blind folded, with my mouth wide open and a huge horse dildo in my sissy pussy. Suddenly I hear the van door opening. I hear many voices of other men. My BBC friend was telling oth... Read full Story
brunasissyslavedolrj 2022-05-09 4,793 Crossdresser Group Sex Outdoor Fetish Big Cock Lingerie domination Guy Fucks Shemale Interracial Sex Toys Ass to Mouth cum in mouth
50%
"SISSIFIED": 12 JOURS DE SISSY-MAS
JOUR 1: mardi 25 C'était le matin de Noël quand j'ai entendu frapper à ma porte, ce qui était, bien sûr, très étrange à dix heures du matin. À midi, j'allais chez ma famille pour Noël, et j'avais rarement des visiteurs inattendus. Toujours dans ma robe, je me dirigeai vers la porte et fus s... Read full Story
Femboy 2021 2023-01-20 1,520 Stockings Crossdresser Amateur Fetish Blowjob Big Cock Lingerie domination Sex Toys cum in mouth
72%
ACROSS THE STREET AND TWO DOORS DOWN by Spanky de Bautumn
Jamie knew he was different. He didn’t fit in with the other boys, but he didn’t feel like he fit in with the girls either, he just knew he was different. He wasn’t into dolls or balls. He was the smallest boy in his class and more than half the girls outweighed him. But the one thing he had going f... Read full Story
SpankydeBautumn 2021-01-29 11,629 Teen (18+) Small Tits Crossdresser Fetish Blowjob Lingerie Guy Fucks Shemale cum in mouth
86%
Alex’s Bottom Slut
So when I was younger, I worked at a pizza place as a delivery guy. It was a pretty boring job for the most part but that all changed one night. I got a delivery to just outside of our range but decided to take it anyways because we were slow. When I got there a very tall and muscular black woman in... Read full Story
Jsmithsub 2019-11-18 57,193 Group Sex Cumshot Shemale Fucks Guy Blowjob Big Cock Ebony gangbang domination Interracial Ass to Mouth cum in mouth
50%
Lady Regina
I know that many say that I I’m a coward because I am comfortable living in the closet as a part time female and not expressing my special female side completely. My friends all tell me to go out and have fun and not worry about what people say or think. In spite of that, and because of the prudish... Read full Story
Regina10 2022-07-01 5,283 Crossdresser Big Tits Masturbation Bareback Fetish Blowjob Ladyboy gangbang Lingerie Guy Fucks Shemale Mature pov
66%
Be My Bitch
After a long day at work, I get in my car, and look forward to the long drive home. It gives me time to unwind and relax. I try to forget about the hectic office and concentrate on my beautiful girlfriend waiting at home with that warm smile that she greets me with when I get there. However, tod... Read full Story
Go Balls Deep or Go Home 2018-08-06 31,695 Crossdresser Outdoor Bareback Blowjob Big Cock Ladyboy Lingerie domination Guy Fucks Shemale Interracial Sex Toys Ass to Mouth cum in mouth
92%
MY Party Favor Fantasy
My Party Favor Fantasy A fictional story built around an old fantasy of mine I ran a notice on one of those sex sites that said” Help me fulfill my fantasy and I bet we take care of some of yours also. Hi there, I am Penny and I am a total bottom trans w... Read full Story
pennypenny 2019-01-08 7,515 Stockings Crossdresser Group Sex Cumshot Masturbation Bareback Creampie Fetish threesome Blowjob Big Cock gangbang Lingerie redhead domination Guy Fucks Shemale Sex Toys Ass to Mouth cum in mouth double anal
91%
My Seductive Secret (True Story)
During my childhood, me and my brother used to play with two other boys who were our neighbors every weekend. One day we decided to wrestle, and I took on the youngest one, (he was about 2 years younger than me, like my brother) and we wrestled in the shed while my bro and his bro (who was my age) w... Read full Story
Chickzdigmeyup 2019-06-18 14,351 Stockings Teen (18+) Small Tits Crossdresser Cumshot Outdoor Masturbation Bareback Fetish Blowjob Big Cock Lingerie domination Sex Toys Homemade cum in mouth
78%
Brotherly Love, Sisterly Love
RICHARD My brother and I were especially close, as twins often are. We shared everything, including all our thoughts, feelings, experiences and desires. Even though we were eighteen, we still shared a bedroom too. It wasn't like there were things that we kept private from each other, it was the t... Read full Story
shemale lover 2012-09-28 6,765 sucking cum swallowing crossdressing
94%
Tortured by the T-Girl Tutor
Duncan didn't quite know how to handle it. He'd planned on a quiet Winter Break. Sleeping til noon, watching too much television and eating tons of junk food. That kind of stuff. He had a whole two weeks off from community college. At school, he was an outcast. They say life gets better after hi... Read full Story
shemale lover 2012-12-18 34,275 Big Tits shemale Big Cock Lingerie domination
80%
The Farm
“See you Sunday, baby,” said Marcus Jenkins to his wife, Tasha. “Alright! Have a good day at work,” the wireless phone company retail store manager smiled. “Love you, Kobe! Love you, Tiara,” the wastewater plant operator said to his offspring. “Love you, too, daddy,” the youngsters rang out in un... Read full Story
Faggyboi and Puzziboi 2021-12-08 5,838 Teen (18+) gangbang Guy Fucks Shemale sissy femboy Ass to Mouth
91%
Panty Town
Chapter One -- Jamie Jamie Sanders did not think he was a sissy. Growing up, he played with trucks and showed his innate male aggression though soldiers games with the other boys. He climbed trees and watched baseball with his Dad and brother. Unfortunately, by the time he was in eighth grad... Read full Story
shemale lover 2012-01-29 19,652 Big Tits sucking ass licking fucking
50%
Hard Decisions by Elaine © 2020
Hard Decisions by Elaine © 2020 No one in this story is based on anyone alive or dead. It is a work of fiction and should not be read by minors. I appreciate the kind efforts of many of my friends who cast a welcoming glance over the initial writings. I owe you all a big debt of thanks. Prolog... Read full Story
Elainetguk 2023-09-06 5,056 Stockings Big Tits Creampie Lingerie Guy Fucks Shemale Mature
75%
Passion in the Rough
Tonight, I was searching in vain for a parking place close to the club, but unfortunately, I had arrived late and there were no empty spaces close by. I drove around and went down several streets in the same block until I found an empty spot. That was perfect I thought as I found a parking place and... Read full Story
Regina10 2024-04-27 3,681 anal Crossdresser Big Tits Outdoor Bareback Creampie Blowjob blonde Big Cock Ladyboy gangbang Guy Fucks Shemale
50%
The Visit
A visit to a hooker, where I describe my bisexual experiences *** It was a weekday, I had bummed off work and had made my way to Ipswich for a visit to Rona, my favorite hooker. She was a lovely woman in her forties, with a fantastic figure, not slim but not fat and with huge tits. She... Read full Story
shemale lover 2012-01-26 8,512 Group Sex licking sucking pissing fucking
50%
My friend Barbara,
My friend Barbara, I look forward to welcoming Barbara. She is a lovely brunette with blue eyes who likes to make love without taboos. She knows how to bring our fantasies to life by imagining exciting role-playing games. - You're going to fall in love when you discover my underwear, she assur... Read full Story
sandratvtg 2024-07-04 2,938 Stockings Bareback Fetish transsexual Lingerie Sex Toys travesti Vintage rosebud plug gonflable gode xxl
50%
A Revenge Fuck
It had been a long day. I had fought the traffic after a miserable week to get home early and surprise my wife for what was to be a romantic weekend. But as I pulled up to the house my heart sank. I saw a bright red motorcycle in the drive way and something inside told me, "This isn't right!&qu... Read full Story
shemale lover 2012-06-03 11,385 shemale oral sex Interracial
80%
Me and 2 black men
Hello again this is EvA…I am a 40 year old tranny. I do not consider my self a crossdresser anymore, because I am doing that for so long that I have been transformed to a very sexy and feminine ladyboy. I have been taking also hormones for 4 years, on and off and I already saw many changes&he... Read full Story
shemale lover 2013-06-22 5,767 Cumshot suck Ladyboy Guy Fucks Shemale Interracial swallowing
33%
Being Barbi's Bitch
After ten wasted years of foolishly trusting in love to 'cure' me of my femininity, I had only just begun to re-embrace the sissy inside me when something made me reach out to an old friend. What made me do it, I really don't know. Although I was once again revelling in even the smallest aspects of ... Read full Story
shemale lover 2011-10-01 9,158 Stockings sucking domination
75%
Flowers in the Heart
Chapter 1 "Hey Scott, Fauna kind of likes you," Jenna said, snickering. "Hey Jenna, it hard to hear yourself over that echo?" Scott said as he caught the football, and then heaved it back to Ronnie. "Huh?" Jenna asked, puzzled. "Yeah, your head up your ... Read full Story
shemale lover 2012-11-11 10,620 anal tranny Cumshot oral
77%
Caramel And Devin
I began crossdressing at 12, but it wasn’t until I was 17 when I dressed up completely for the first time. When my parents went away for the weekend to Atlantic City, I took advantage of the opportunity to explore my feminine side to the fullest. As soon as they left the house that summer morn... Read full Story
shemale lover 2011-11-10 4,431 Cumshot sucking fingering
100%
Vanessa gets more than she bargained for!
Vanessa had it all planned out meticulously. She had taken the day off and planned on doing a bit of last minute shopping before checking into the hotel in the early afternoon. She eventually decided on buying a massive dildo to get her ready for the party. This would give her plenty of time to take... Read full Story
Vanessa Luv 2020-05-15 8,011 Stockings Crossdresser Group Sex Big Cock gangbang Lingerie Interracial cum in mouth double anal
100%
Angel & Victoria
Angel was a beautiful young girl living with two of her best friends, Monica and Amanda. All were transsexual, and the three shared everything together, from clothes, their sexy intimates, lovers, and each other's bodies. Angel was the youngest, at 23, a Japanese anime lover and the most... Read full Story
shemale lover 2011-09-23 6,216 anal Creampie Big Cock oral
72%
The Weekend
The weekend A story inspired by the very sweet and sexy samantha satine and my beautiful wife Part 1 - The preparation samantha packed her suitcase with her usual attention to detail, makeup, lingerie, wigs, but no dresses. Her head was confused by this, Master D had given her instructions... Read full Story
MasterofSissies1 2018-12-04 9,005 anal tranny Stockings Crossdresser Group Sex gangbang oral domination Guy Fucks Shemale transvestite schoolgirl School uniform maid uniform
66%
intimate Cousins
My favorite cousin and first lover, Billy, was just released from prison and I was anxious to see him. I am ecstatic that he is out, and I am thinking about all the past fun we had as I prepare to revisit those good times. Tommy knows all about my relationship with Billy and he understands my need t... Read full Story
Regina10 2022-05-13 6,295 Stockings Crossdresser Cumshot Masturbation Bareback Blowjob Big Cock Ladyboy Guy Fucks Shemale Ass to Mouth cum in mouth double anal
100%
Why I’m a Cock Whore!
Hello Love, The summer before my freshman year in high school. I found a VHS porno video right next to a dumpster behind our local video store. Brought it home. Couldn’t watch it until my family left to use the VHS player. It turned out to be a she male porno at first I felt weird but after watch... Read full Story
Samantha Cummins 2023-04-18 6,423 anal Stockings Cumshot Creampie Lingerie femboy Ass to Mouth cum in mouth
100%
Becoming Paula
I work in an office with 15 coworkers about 11 of them are women. I get along well with my coworkers and go out of my way to be helpful. I find it is more fun to work with friends than to work with strangers. My name is Paul and I work in an insurance claims office processing claims and making recom... Read full Story
shemale lover 2012-04-05 6,658 anal sex orgasm fingering
100%
A Valentines with a Bang...x
Time had seemingly flown by since meeting the man I was to fall head over heels for on a drunken night in the town centre, the type of guy you would never expect to be dating a transvestite but here I was waking by his side as I had done for the past 6 months or so since we moved in together after m... Read full Story
shemale lover 2012-07-16 3,351 anal sex cum oral sex
100%
delicious virile male flesh
Tasted delicious virile male flesh… The breeze caressed my swollen nipples giving me pleasant shivers. The two glasses of Riesling had also contributed to my excitement. My crotch was burning as if the disappearing sun had blown all its thermal energy into me. Under my fine lace panties, purple o... Read full Story
hippocampus_171 2023-04-23 5,211 anal Small Tits Amateur Creampie Blowjob Mature small cock big ass feminisation cum in mouth gaycd virile
50%
Freak House Superstar Come Fest
Kiki and Ty Blaze were doing their thing. They were living on their love and passion, literally. The couple had taken their love, passion and desire to please one another and turned it into their livelihood. They had become stars in the world of underground porn. Their production studio, Nasty Nigga... Read full Story
shemale lover 2012-02-01 6,515 anal shemales Group Sex
100%
The Interview
The Interview By Sabrina G. Langton *** 'A crossdresser goes on an interview in lots of pink, of course she gets the job' 'Author's note, just a quick little story with some really graphic sex, and a little tiny moral. I hope YOU like it.' *** "Okay, sit, sit, let's get started. S... Read full Story
Brina Giselle 2023-12-04 6,904 anal Crossdresser Blowjob heels cum in mouth pink dress
97%
Stepdaughter's Transexual Surprise
I've been through two marriages in the past. My first wife died at an early age of 29 from a massive heart attack and my second marriage was a nightmare from hell, that I'm now free of. When I met Jeanie, I knew I had to take it slow and easy. Jeanie was a very nice lady in her early 40's. I myse... Read full Story
shemale lover 2011-12-04 13,781 anal Fetish transexual
100%
Sissie Slut's Windows of Womanhood
I flash back to my first time with a grownup adult at the tender age of16 . I was so nervous now that we were here in the motel room. I was nervous for so many reasons. I lied to my family and told them I was staying at a friend’s house. Instead, I'm here with Mr. Joey in a motel room and he was my... Read full Story
Regina10 2021-02-22 6,850 Crossdresser Bareback Creampie Fetish Blowjob blonde Ladyboy Lingerie Guy Fucks Shemale Ass to Mouth cum in mouth double anal
80%
Chastity and its effects
I actually thought of writing this for some time now, this quasi-scientific testimonial and reflection about chastity. Now, I finally had some time to reflect, gather and compare info and experimentation from personal experience about the topic. More specifically, the effects it has on the mind and ... Read full Story
DoraTV 2023-02-09 6,472 Crossdresser anal play chastity sissygasm Sissyfication story chastity orgasm
100%
I fucked my personal trainers ass for the first time
I greeted him on my bed in my sheer black lingerie. I knew he’d be nervous, and truly I was as well. We’d spend so much time in the gym together and I knew he wanted me, but taking that next step was sometimes difficult, especially when our relationship was always professional. Posing for him, I r... Read full Story
Madison Heights 2023-05-18 7,288 anal Shemale Fucks Guy Big Cock Frottage
0%
The Greatest Lie Part 13
Does Life Imitate Art? I love technology, in spite of the stereotype about girls. Although I was a guy, at least outwardly, until a year ago, I think I was always inwardly a girl. According to the stereotype, we girls are supposed to be indifferent to anything more technical than the designer cov... Read full Story
shemale lover 2012-01-20 4,992 femdom erotic encounters consensual
100%
A Game within a Game Part 1
Epilogue Rob came home from work. His wife Jenny was waiting for him. In her hands she held a letter. Jenny said: "We received this letter today. It is sad news from Marion S. We have met her and her husband John a few times - do you remember? John has had a car accident while driving fas... Read full Story
shemale lover 2012-03-05 14,456 Fetish bdsm crossdressing bisexual
100%
Anastasia's Life So Far
Chapter 1: Humbling Beginnings My story starts where most every crossdresser's story starts. It starts somewhere around the time I was an infant. I can remember not to mention being told several thousand times that my choice of toys as a child was dolls, strollers, dress up and tea parties, Barbi... Read full Story
shemale lover 2012-11-27 11,195 Fetish crossdressing feminization