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
[DUAL TECH]® style with double enhancing feature: shapes both your front and backside like never before! Featuring hidden padding that provides instant volume and definition to the butt, while our smart package cup naturally adds projection and enhancement to your package. Now you can feel confident and well-endowed from all sides!
SUPERIOR COMFORT AND DESIGN IN MEN'S SHAPEWEAR.
FEATURES
- [PADDED Tech]® + [PACKAGE Tech]®
- Short inseam boxer
- Hidden padding that gives you more bum instantly
- Permanent Smart Package Enhancer
- No VPL ‘s (visible penis lines)
Fabric
Fabric
Care Instructions
Care Instructions
- Reviews
- Questions
Canada2nd pair of Rounderbums I have purchased.
1st pair I purchased were a large from reading reviews, I found them to be too big and gappy on my 32in waste. This pair is a Medium and it is a bit better, but still wish the edging around my lower butt cheeks was a bit tighter/snugger as they still gap a bit. The matterial is excellent and the colours are bright. :-)
Rounderbum Canada
Dear Dale Thank you very much for your comments, your feedback is truly appreciated so we can take notes of it to provide a better service next time ;) Regards
United StatesWonderful but order correctly
I have purchased this brand for years but it is important to order 1 size larger. I am now a 30 or 31" waist wand wear a large. When I was 33 or 34 I wore and extra large.
Rounderbum Canada
Thank you for your comments Andy Yes, products run smaller than conventional underwear. Its important to order either one size up or to consult our size chart ;) Thank you!
United StatesAmazing product
This Rounderbum padded brief looks so natural and gives me a sexy behind. Fits just like regular briefs. Unnoticeable padding even without pants. Looks just like regular underwear. Makes me look like I have a really nice ***.
Rounderbum Canada
Thank you! Hope you are having a great experience with your undies :)
CanadaMaterial is excellent, well made. I didn’t like the size i got should’ve went to large not XL. Got the dual tech, but the front padding in the briefs i got seems to be quite flat or thin.
United States
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.