Our original design gives more gluteal volume and definition, adapting perfectly to every body shape its design is practical, discreet and comfortable. Perfect for water activities or extreme sports for long periods of time.
Rounderbum, no longer leaves you at the waterʼs edge. The innovation and technology that defines Rounderbum has been translated into the new H2O swimwear line. The H2O trunks with proprietary design padded technology that absorbs minimum moisture and quick dry gives you that volume boost to your butt that equally boosts your confidence. The upscale tailoring with slightly thicker fabric polished steel buckles to adjust the waistband allow them to double as shorts. So youʼre equally comfortable sipping cocktails on the yacht deck, splashing in the surf or cooling off in the pool while we have long helped you say goodbye to saggy jeans Rounderbum now has you backside covered for wet summer fun.
FEATURES
[PADDED Tech]®
Removable padding
Round Bum Effect
Waistband Fasteners
Quick Dry
Waistband adjustment: 0.5'' each side
Pad thickness: 0.5'' approximately
Inseam:
Size Small: 4''
Size Medium: 5''
Size Large: 5.25''
Size XL: 5.5''
Machine wash cold. Use mild detergent. Please don't use bleach. Hang to dry. Do not iron. Do not soak.
Fabric
95% POLYESTER 5% ELASTANE
Care Instructions
Customer Reviews
Overall rating: 4.8 / 5 from 12 reviews.
I loved these swim shorts before I even tried them on. Then I did try them on and loved them even more! Women have told me that my rear end is pleasing to the eye, and these will undoubtedly enhance that. I got them a bit late for swim season in the Midwest, but I have an indoor pool I often visit. I am anxious to see the reaction I get from the ladies who often are there for water aerobics. I appreciate that the shorts have two front pockets and a rear pocket, so I can wear them as shorts as well as for swimming. That will be great next summer if I have to get some errands done before I hit the pool, lake or swimming hole or on vacation when I want to do some other attractions before the water park.
Store owner replied:
Hey,
Thank you for sharing your experience and the photo wearing the H2O Padded Swim Short.
We designed these shorts to offer both a flattering boost and versatile functionality with handy pockets for any setting.
Enjoy wearing them at your indoor pool sessions and on your upcoming summer adventures.
I loved these swim shorts before I even tried them on. Then I did try them on and loved them even more! Women have told me that my rear end is pleasing to the eye, and these will undoubtedly enhance that. I got them a bit late for swim season in the Midwest, but I have an indoor pool I often visit. I am anxious to see the reaction I get from the ladies who often are there for water aerobics. I appreciate that the shorts have two front pockets and a rear pocket, so I can wear them as shorts as well as for swimming. That will be great next summer if I have to get some errands done before I hit the pool, lake or swimming hole or on vacation when I want to do some other attractions before the water park.
Store owner replied:
Hey,
Thank you for sharing your feedback on the H2O Padded Swim Short and we are glad the fit and pocket design meet your needs so well.
We design our swim line to provide both functional everyday wear and confidence in the water.
Enjoy wearing them at your indoor pool sessions and throughout your summer outings.
I’m a medium in the Speedo style and a small in this style
Store owner replied:
Hey,
We are absolutely thrilled to hear you love your H2O Padded Swim Short. Your detailed feedback regarding the sizing, noting you're a medium in the Speedo style and a small in ours, is incredibly valuable for us and for helping other customers find their perfect fit.
We truly appreciate you taking the time to share your experience, as it helps us continuously improve and refine our product descriptions.
Thanks again for choosing Rounderbum.
Bought the underwear and swimsuit with 100% thrill with new tech built in pad upgrades. They fit perfect and don't "fall down" with your jeans. Finally I look great in any activities now.
I bought this bathing suit and the button came off and your company replaced it with a new swim suit!! Great customer service 🤗
Thank you! Highly recommend
Store owner replied:
Looking forward to hear from you again! :D
The look is amazing! They are stretchy but a bit tight, yet that was the look I was going for. Love that I could swim in the beach, get wet and being able to walk around as with regular shorts without having to change for awhile. Makes my booty really pop! 😅
Men’s shapewear is on the rise — and for good reason.
More guys are asking, “Why should only women have these options?” From all walks of life, men are shopping shapewear to look and feel their best. Whether it’s smoothing love handles, lifting your butt with padded underwear, improving posture, or recovering post-surgery — men’s shapewear does it all. And let’s be honest — who doesn’t want a more toned, confident look?
Is it good to use shapewear?
There’s nothing wrong with wanting to feel your best — and men’s shapewear can help.
It’s great for improving posture, supporting post-surgery recovery, and boosting confidence for special events like weddings. Whether you’re looking for a more lifted look or just want extra comfort during long days, our men’s padded underwear delivers both support and style.
What does shapewear do?
At Rounderbum, our goal is to help men everywhere feel great with shapewear.
But it does more than just boost confidence — our padded briefs add lift and volume to your butt, helping clothes fit better and adding comfort during long flights or desk time. Our compression shirts aren’t just for shaping your torso — they support better posture and are a great option for post-surgical recovery too. Shapewear isn’t just about looks — it’s about feeling good all around.
