High Waisted Bikini Bottom - The Sumatra

“This bikini is so comfortable! I get so many compliments, I love the colour, the design and the fit! I want them in all the colours!" - Haley, verified buyer

Smoothing. Supportive. Full-Coverage Confidence.

A high-waisted bikini bottom designed to shape the waist, smooth the silhouette, and stay secure through surf and swim.

  • Flattering high-waisted fit - Supportive waistband gently smooths and defines your waist
  • Full coverage cut - Designed for comfort and confidence while staying secure in the water
  • Soft, durable & sustainable - Premium Italian recycled fabric with UPF 50+ protection and chlorine resistance

Color : Midnight Black

Size : XXS

   - Ships in 24 hrs. Receive in 2 - 6  Business Days
Regular Price
$40.00 AUD
Sale Price
$40.00 AUD
Regular Price
$80.00
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     in Sumatra, Size 
    Only 10 left!
    ✅
    Ships in 24 hours.
    Asset_7_4x_c57ef1a0-8e0a-4bc8-831f-8df380350473
    UPF 50+ Protection
    1
    Durable - lasts twice as long
    Sustainable
    Sustainable

    "Works really well for surfing and the bottoms are nice and firm but don’t cut in as there’s no annoying tight or elastic waistband. Definitely going to buy more!"

    -Elsie

    "Love how this suit shapes my body and made me feel confident!"

    -Erin

    "I love this bikini so much. Have worn it all summer long. Max comfort and stylish simplicity."

    -Louise

    "Absolutely amazing! Love the fit and the fabric."

    -Melanie

    'I really love the design, it fits perfectly!'

    -Mélanie
    ❮
    ❯
    Recycled Materials
    UPF 50+ Protection
    Luxuriously Soft Fabric
    Made With Love

    As seen in

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    honeycombers
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    nomadbythesea-bikini1_Product_Page_-_Shopify_Size-17

    Perfect two piece cut

    Our two piece bikinis are made with a luxurious sustainable buttery soft fabric. 
    They are the perfect intersection of sporty and fashionable.  With a comfortable seamless design, both functional and flattering and a tailored feminine design that is suitable for leisure or athletic activities.

    aq222493_tahliabourke_by_clementinebourke_Product_Page_-_Shopify_Size-244

    Designed for comfort

    We’ve designed our swimsuits for comfort right down to the smallest detail. The luxuriously soft fabric, double lined, with innovative cupless support and smooth seams will hold you in and support you, with all your water activities.

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    Sustainable Swim

    We value slow fashion over fast with a focus on sustainable fabrics and ethical production. Crafted from regenerated nylon that is designed to last twice as long as your regular swimsuit. Our swimwear is designed & made in Bali with love.

    • 5 stars: 22 (88%)
    • 4 stars: 1 (4%)
    • 3 stars: 1 (4%)
    • 2 stars: 1 (4%)
    • 1 star: 0 (0%)
    Some of the reviews shown are from related products the merchant grouped with this one.
    G
    Glcharleston (Charleston, US)
    Not worth the price

    I really wanted to love these bottoms because they had so many great reviews, but they just weren't what I expected. The material feels a bit scratchy and cheap rather than soft and comfortable. The rise is also lower than I'd prefer, although I do have a long torso, so that may not be an issue for everyone. The sheer side panels don't look as they do in the online photos, which was a little disappointing.
    On the positive side, the white fabric has held up surprisingly well, even after being in the dirty Atlantic Ocean, and I was able to surf in them without any problems. They stayed in place the entire time, which is definitely a plus. Overall, they're functional, but the quality and fit didn't live up to my expectations.

    Hi Gabrielle, thank you for sharing your detailed feedback. We’re sorry the Sumba Bikini Bottom wasn’t quite what you expected.

    We did want to clarify that the Sumba is made from premium Italian recycled nylon and is fully double-lined. While fabric feel can be very personal, this is a high-quality performance fabric specifically chosen for its durability, shape retention and performance in the water.

    The Sumba is actually one of our high-rise styles, although as you mentioned, having a longer torso can certainly affect where the waist sits on your body. For those wanting our highest rise, our Sumatra Bottom offers the most coverage through the waist.

    We’re really pleased to hear the Sumba stayed securely in place throughout your surf and that the white fabric held up so well in the Atlantic - exactly the kind of performance we design our swimwear for

    L
    Leah Grote (Sun Prairie, US)
    Absolutely love

    These look incredible - I’ve received so many compliments. I love Ocean Soul swimwear! Highly recommended.

    C
    Candice (Denpasar, ID)
    The sumba radh guard and high waisted bottoms

    Absolutely love this set. It fits perfect. Compliments the right areas and is made with real love and workmanship. Such great quality and worth every penny.

    V
    Virginia Dondi (Madrid, ES)
    Sumba 💜

    In love with this swimsuit!
    The fabric is super soft and it stays in place while doing jumps and tricks , exactly what a kitegirl needs ✨

    L
    L.M. (Noblesville, US)
    Beautiful color and coverage

    This is such a beautiful suit. I'm usually a small or medium in swim tops and small in bottoms, so I went by the size chart measurements and got a medium for both. The bottoms are definitely cheeky but it gives it a little bit of a sexy silhouette without being too much. I can't wait to wear this!

    N
    Naza
    Love this bikini!

    This bikini is really is high quality and very flattering 😍

    L
    Louise Stanley (Sydney, AU)
    My favorite bikini

    I love this bikini so much. Have worn it all summer long. Max comfort and stylish simplicity.

    J
    Jessica Goodman (Dubai, AE)
    The perfect high rise bottom

    . I got a small (different suit in photo but used to show my body type), and it fit pretty perfectly. I’m 5’ 5” or 165cm and usually a UK10 and size Small. For US bottoms I’m a 4 typically. I tried a medium (which is the size I was for the one piece) but it was too big in the waist.

    So glad you found the perfect fit! Thanks for sharing your sizing experience—super helpful! Enjoy your high-rise bottoms! ✨

    S
    S.P.
    Gorgeous design & so flattering!

    Comfy, flattering, the size is spot on! I just wore these surfing with the matching top & they’re perfect!!

    Y
    Ying (Melbourne, AU)
    Not high cut

    Not high cut so not what I was looking for.

    E
    Elizabeth lubis (Jakarta, ID)
    Fit me well

    Good fabrics. The color is Suitable for my skin!

    E
    Elsie Fulton (Melbourne, AU)
    Great fit

    Works really well for surfing and the bottoms are nice and firm but don’t cut in as there’s no annoying tight or elastic waistband. Definitely going to buy more!

    N
    Naia Sohl (Denpasar, ID)
    Great for surfing

    Love that they actually stay on when I’m surfing and I can wear them when I’m on the beach as a normal bikini.

    So glad you love it! Secure for surfing and stylish for the beach—best of both worlds! Enjoy the waves! ✨

    L
    Lotta
    Comfy material

    The high waist stays snuck while you’re getting washed in the waves.

    So glad you love the fit! Secure, comfy, and wave-ready—just what we designed it for! Enjoy! ✨

    C
    C.M. (Évry, FR)
    My fav bikini bottom

    It was my first piece from OSB and now with the women rash guard it is my favorite swimwear.
    Very flattering fit and confortable. I love it!

    J
    Junko Kadoi (Denpasar, ID)

    偶然入ったお店ですが、好みのデザインと色合いでした。とても気に入っており色違いも欲しくなりました。

    So happy you found us! Glad you love the design and colors—hope you get to add more to your collection! Enjoy! ✨

    C
    C. (Antipolo City, PH)
    my favorite bikini bottom

    It's even better than in the photos ! Absolutely love wearing it, as for freediving as for going to the beach. Comfy and flattering at the same time !

    C
    Claire Greig (Melbourne, AU)
    Great shape fit and cut

    Absolutely love these bottoms … they are a such a great fit and cut. The high waist it so flattering and looks great with any other bather top … there is something about a high waist bottom that is so stylish yet practical … LOVE!!!!

    N
    N.F.
    My number one

    It was my first two-piece from OSB & I love it like the first day! Fits perfectly and nothing slips! A dream.

    F
    F.C. (Madrid, ES)
    🤍

    Love this! Easy to combine with any top! 😊

    A
    Anonymous
    Love the green!

    super flattering on and love the high waist

    E
    Erin Roche
    Incredible, so flattering on all body shapes & sizes

    Love how this suit shapes my body and made me feel confident!

    So happy to hear that! Flattering, confidence-boosting, and beautifully designed—just what we aim for! Enjoy! ✨

    M
    Mélanie (Levallois-Perret, FR)
    Sexy and Comfy!

    Really love the design, it fits perfectly!

    S
    Simone Langholz (Launceston, AU)
    Fantastic!

    Absolutely amazing! Love the fit and the fabric 😍😍

    R
    Richard
    So helpful!

    I was not sure about the size for my girlfriend so I messaged the shop for help. They were very responsive and super helpful. Thanks so much team!!!

    FAQS

    Yes! These bottoms sit comfortably at the natural waist, offering full tummy coverage and a flattering, sculpting fit that hugs your curves.

    They offer medium-to-full coverage—enough to feel confident and secure, while still flattering the shape of your bum.

    Absolutely. The Sumba Bottoms stay in place through surfing, swimming, diving, and more—no tugging or adjusting required.

    Yes. The double-lined design and supportive waistband offer gentle shaping and a smoothing silhouette without feeling restrictive.

    They’re crafted from sustainable Italian fabric—ultra-soft, UPF50+, and resistant to chlorine, saltwater, and fading.