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“Ok cool, you launched your Huntington thong bikini bottom…but I really only wear HIGH WAISTED thongs. When are you coming out with that?” 

We hear you, and we raise you: Penfield.

A dipped high-waist front with a Brazilian-cut back. It’s almost *too* good, and really hits our ‘swimsuits that feel like underwear’ concept home. onewith’s inner grip tape at the top edge and along the legline holds Penfield in place, while our elastic-free and better-than-seamless swimwear bonding ensures that nothing pinches or squeezes, for totally dig-free swimwear look that is beyonddd cheeky.   

To balance out Penfield’s booty-loving back, we love pairing Penfield with our Thames Scoop Neck Bikini Top, which has more coverage in the back. 

📏 fit note: if you’re not sure which size is best for you, check your measurements against our size chart here. And if you end up between sizes, we recommend you size down for this style.

bathing suit that fits like underwear

Penfield High Waist Thong Bikini Bottom

Regular price $47.00
Unit price
per 
4.0
Rated 4.0 out of 5 stars
9 Reviews
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see our size guide/take our sizing quiz for sizing tips!

80% nylon, 20% elastane

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FREE shipping on all US orders over $85

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“Ok cool, you launched your Huntington thong bikini bottom…but I really only wear HIGH WAISTED thongs. When are you coming out with that?” 

We hear you, and we raise you: Penfield.

A dipped high-waist front with a Brazilian-cut back. It’s almost *too* good, and really hits our ‘swimsuits that feel like underwear’ concept home. onewith’s inner grip tape at the top edge and along the legline holds Penfield in place, while our elastic-free and better-than-seamless swimwear bonding ensures that nothing pinches or squeezes, for totally dig-free swimwear look that is beyonddd cheeky.   

To balance out Penfield’s booty-loving back, we love pairing Penfield with our Thames Scoop Neck Bikini Top, which has more coverage in the back. 

📏 fit note: if you’re not sure which size is best for you, check your measurements against our size chart here. And if you end up between sizes, we recommend you size down for this style.

bathing suit that fits like underwear

4.0
Rated 4.0 out of 5 stars
Based on 9 reviews
Total 5 star reviews: 5 Total 4 star reviews: 1 Total 3 star reviews: 1 Total 2 star reviews: 2 Total 1 star reviews: 0
9 reviews
  • TT
    Taylor T.
    Verified Buyer
    4 weeks ago
    Penfield High Waist Thong Bikini Bottom
    Reviewing
    Penfield High Waist Thong Bikini Bottom
    Rated 5 out of 5 stars
    Love Love Love

    Exactly as described. Soft, supportive, and super flattering. I'm only buying my swimsuits from onewith from here on out!

    O Profile picture for onewith
    onewith
    1 week ago

    Hi Taylor, thanks so much for your review! We're so glad you love your Penfield, and we're excited for you to experience some more dig-free swim! Enjoy your onewith 🌊

  • TG
    Tristyn G.
    Verified Buyer
    1 month ago
    Penfield High Waist Thong Bikini Bottom
    Reviewing
    Penfield High Waist Thong Bikini Bottom
    Rated 5 out of 5 stars
    5 stars!

    Fits really nicely and is high waisted so looks nice too, very excited to wear when it’s warmer out

    O Profile picture for onewith
    onewith
    1 month ago

    Hi Tristyn, thank you so much for this review! We're just as excited as you are for it to get warmer, so you can wear your Penfield! Enjoy the high-waisted, second-skin fit :)

  • SH
    Samantha H.
    Verified Buyer
    4 months ago
    Penfield High Waist Thong Bikini Bottom
    Reviewing
    Penfield High Waist Thong Bikini Bottom
    Rated 5 out of 5 stars
    My 🍑 has never looked better

    These are my favorite bottoms, hands down! I love the Buzzin color and these bottoms hit in the right places to make my butt look the best it’s even been.

    This is my second swimsuit from OneWith and I immediately ordered the mystery bundle so now I have several sets and an extra non-thong bottom for ~family events~ Every suit is perfect, doesn’t dig and looks like it was custom made for me. After experiencing OneWith I don’t think I could ever wear another swim brand!

    O Profile picture for onewith
    onewith
    3 months ago

    Hi Samantha, thank you so much for this review! We're happy to hear your Penfield and other onewith pieces are super flattering and feel truly onewith your body! We love that you fully embraced what the Mystery Bundle Promo was all about, and that you were excited to receive any onewith piece :) Thank you so much for your support 🧡

  • SW
    Saskia W.
    Verified Buyer
    6 months ago
    Penfield High Waist Thong Bikini Bottom
    Reviewing
    Penfield High Waist Thong Bikini Bottom
    Rated 5 out of 5 stars
    FINALLY a thong bikini for my body

    I think I will buy these bottoms and these bottoms alone for the rest of my life. I struggle so hard to find bottoms in the style/coverage that I want that are also flattering to my body. As a “mid-size” girl (5’9” 200lb, lean with some extra squish around my tum and bum) I constantly feel forced to choose between teeny tiny bottoms that barely cover my hoohah or ones that cover me up past my belly button and look like a diaper. When I do find a mid-belly high waist option, it’s always full coverage on the bum. So FINALLY I found the perfect style - not to mention the “fits like underwear” fit is sooooo flattering. I feel confident showing off my bod more than ever in these bottoms. PLEASE RELEASE MORE COLORS! esp dark ones and patterns, the light ones scare me a little. Thank you onewith!

    O Profile picture for onewith
    onewith
    6 months ago

    LOVE to hear this! So happy Penfield is the perfect thong bikini bottom for you 🩵 also note, this bottom comes in 3 dark colorways! Abyss, Cola, and Stellar are ultra-dark and sound like what you're looking for ✅

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