Our size guide will help you find the perfect fit. If you have any questions, please use the chat icon below.
Our underwear and top sfits true to size and are fitted, however if you like your underwear/tops a little more relaxed, please size up.BOXER BRIEFS / BOXERS / TRUNKS / BRIEFS / JOCKS
Our underwear fits true to size and are fitted, however if you like your underwear a little more relaxed, please size up.
| WAIST SIZE | ||||||
S |
M |
L |
XL |
2XL |
3XL |
|
|
IN |
28-30 |
31-34 |
34-37 |
37-40 |
40-43 |
43-45 |
|
CM |
71-76 |
79-86 |
86-94 |
94-102 |
102-109 |
109-114 |
T-SHIRTS / TANK TOPS / VESTS
| CHEST SIZE | ||||||
S |
M |
L |
XL |
2XL |
3XL |
|
|
IN |
34-38 |
38-41 |
41-44 |
44-48 |
48-52 |
52-56 |
|
CM |
86-97 |
97-104 |
104-112 |
112-122 |
122-132 |
132-142 |
SHORTS / JOGGERS & PANTS
| 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 |
BRIEFS / SHORTS
| 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 new innovative collection permitting all our patented tech to fly under the radar undetected. We utilize new inventive manufacturing processes that allow us to hide and eliminate seams. This is more than just covert technology.
The bestseller that gives more gluteal volume and definition, adapting perfectly to every body shape now in our exclusive fusion line WITHOUT STITCHING. Its design is practical, discreet, and comfortable. It can be used as everyday underwear, for sports, or great when sitting down for long periods of time. Feel great in your own skin!
FEATURES
- [PADDED Tech]®
- Exclusive patented design: USD876,750S and USD877,453S
- Removable padding
- Instant gluteal volume
- Long inseam boxer
- Undetectable fused seams
- Sleek and understated waistband
- Durability and comfort
- Bonds to your body in Stealth style
Fabric
Fabric
Care Instructions
Care Instructions
*Exclusive patented design: USD872,970S, USD877,453S
- Reviews
- Questions
- butt
- techs
- Thanks rounderbum
- aging
- coverage
- boxer briefs
- HIV meds
- equation
- 55356
- texture
CanadaTotally Love these
These are amazing espescially under dress pants or white linen pants in the summer/vacation
United StatesI Feel Good
Love these. I have several pairs of linen pats for the summer that are similar shade so these will work out great. They feel great as well.
Rounderbum USA
Thanks for wearing Rounderbum :)
United StatesNice style and natural color
United StatesStealth
Exactly what they claim it to be! Awesome product. With all 3 techs were included in one product.
United StatesGreat fit
I put them on and received several compliments. They really do enhance one's butt
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.