Our size guide will help you find the perfect fit. If you have any questions, please use the chat icon below.
SWIMWEAR
| WAIST SIZE | |||||
S |
M |
L |
XL |
XXL |
|
|
IN |
28-29 |
30-31 |
32-33 |
34-36 |
37-38 |
|
CM |
74-78 |
79-84 |
85-88 |
89-93 |
94-100 |
Description
Description
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
Fabric
Care Instructions
Care Instructions
- Reviews
- Questions
Canadavalue for money
absolutely loved it! the fit, the look!
Rounderbum USA
Amazing! Thanks for your trust :)
CanadaGreat fit
The only thing I do not like about it is the H20 logo….anybody who knows Rounderbum will know why your backside looks good. Lol. The only downside to the product
CanadaCustomer Service A1
The swimshort was a bit small so I had to exchange. The Customer Service was so great. They made it simple, fast and easy. Thank you so much!!!
Rounderbum USA
Our pleasure! Warm regards ;)
FAQ about shapewear
Do men use shapewear?
Do men use shapewear?
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?
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?
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.