Women's One-Size Bikini
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- Solid Colors & Prints
- 80% Nylon
20% Elastane
Machine Wash Cold
Tumble Dry Low
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Customized Flex One-Size
Ultra-soft, fit flexible fabric with extreme stretch that bounces back and won’t lose its shape.
Ultra-Soft
Lightweight
Stretch & Recovery
We Obsess Over Every Stitch
Our dedication to the smallest detail elevates every pair you wear.

One Size Fits Most
Fit flexibility that won’t lose its shape. Perfect for times you’re in-between sizes, or if you want to grab as a gift.

No Bunching, No Riding Up
Stays in place for comfort all day, and won't roll, pinch or leave marks.
Overall rating: 4.4166665 / 5 from 24 reviews.
AI Generated Review Summary
Customers highly appreciate the softness, stretchiness, and comfort of these one-size bikinis. They also rave about the perfect fit, which is mentioned multiple times in reviews.
Summary topics
- Fit (35%): A substantial number of customers raved about the perfect fit of the product, mentioning it multiple times.
- Comfort (25%): Many customers raved about these underwear, praising their softness, stretchiness, and comfort.
Review topics: ["fit","stretch","size","underwear","material","addition","undies","bikini","briefs"].
Review highlights
- "She normally wears a medium underwear and the one-sizes fits great and they are comfortable." —
- "These underwear are incredibly soft and stretchy—you honestly feel like you’re wearing nothing at all!" —
- "Tried the bikini and love the fit and stretch." —
Reviews
These underwear are incredibly soft
"These underwear are incredibly soft and stretchy—you honestly feel like you’re wearing nothing at all! They’re comfortable, well-made, and the quality is fantastic. I absolutely love them!"
I wore them once. Washed
"I wore them once. Washed them and the seams have already started coming apart."
Love them all , comfortable,
"Love them all , comfortable, fit well, stay where they should while wearing. Wash up good"
Can’t get enough of!
"I am absolutely in love with these underwear. Every pair of underwear that I own (40+ pairs) is Tommy John. I have recently lost a lot of weight, and plan to lose more. I wasn’t sure what size I was going to end up wearing. So, these were nice because I was able to buy new Tommy John underwear without needing to know my exact size. They are deliciously soft and buttery with incredible stretch. They do not ride up and do not roll down at the waist. I wish they came in more colors, but I’ll take what can get! I hope that they keep making them, because I want more!"
Do yourself a favor and switch to these!
"These are the best underwear. Fits great, fabric feels like you’re not wearing anything and the size is perfect."
Both bras I bought for
"Both bras I bought for Christmas gifts ran way too big. They were both a size small. There was not an xs option."
Perfect fit! Feels like butter.
"Perfect fit! Feels like butter."
One size fits most
"The material feels luxurious; the cut is very similar to the second skin brief when one is laid on top of the other. However, the leg openings do not stay put whenever I move. I am constantly adjusting so that the leg openings don’t roll and bunch up. I wear a small in the second skin line. Currently I measure 36. 25” at the widest part of my hips. Tommy John’s customer service is amazing: fast response to my feedback and I am completely satisfied with the resolution."
Best underwear.
"These are my new favorite underwear and will only be buying these from now on. So comfortable, I forget I’m even wearing underwear and they do not ride up. Perfection!"
Absolutely perfect
"Absolutely perfect"


