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.
| 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 |
| 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 |
| 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 |
| 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 |
Noticing your bum is not as plump or perky as it used to be? Then this the perfect underwear for you! Its hidden band design creates a push-up effect that lifts your cheeks like they were in your glory days.
Increase your attributes each day of the week! Box set with Boxer Trunks for every day: Monday, Tuesday, Wednesday, Thursday and Friday.
Superior comfort and design in men's shapewear.
*Exclusive patented design: USD864,521S
Overall rating: 4.7 / 5 from 25 reviews.
Son muy cómodos, la verdad me encantaron ya llevo varias compras, muy recomendable.
Store owner replied: Hola, Nos alegra mucho saber que encuentras nuestros Lift Trunk 5-Pack muy cómodos y que te encantan. Es fantástico que ya lleves varias compras con nosotros y que nos recomiendes con tanta convicción. Gracias de nuevo por tu preferencia y esperamos tenerte de vuelta en Rounderbum.
Excelente calidad
I’m a fan of these trunks. They enhance the bootygains in the gym in a perfect way :)
Store owner replied: Our favorites too :) Thanks so much for your comments.
Fits well, very comfortable
The sizing from this company is so wrong. I'm a medium, I ordered a large and should have gotten an extra large. They are way too tight and way too expensive. Will not buy again.
Nice products
It feels so comfortable and looks great on me. Great quality and best price This is one of my favorite trunks.
Store owner replied: Thanks for placing your trust in us and your willingness to share :)
Very comfortable Trunks, soft material
Store owner replied: Thanks for sharing this with us :D
Very happy with my first purchase with you guys. I will back soon 😊
Very happy with my first purchase with you guys. I will back soon 😊
Store owner replied: Thank you for your comments :D Looking forward to hear from you again!
They give a nice gentle lift
The fit is great, not much of a lift, but I still really like the way they feel
Store owner replied: Thank you for sharing your experience! :D
Great fit and it gives you a nice lifting effect
Love the lift in the back but the front is too tight otherwise the fit is good. Nice quality and fast delivery.
❤️
Good value over buying individually.
Finally some less flamboyant colors. I recommend 1 size larger than you think
So low rise, I kept pulling up because the butt hugging stuff was pulling it down.
Store owner replied: Dear Kevin Lift trunks are low rise, we recommend getting one size up to get a better fit or try something different medium-rise like the items from our Padded tech.
Whilst I get back in tip-top shape at the gym, these lifted briefs have not only lifted my bum-bum, but my spirits as well! I bought both the trunks and boxer briefs and workout boxer briefs too. I had no more room in my underwear drawer so I gave a lot of my boxer briefs that I barely wear to a friend. I can only imagine how my posterior will look after a couple more months of leg/glute days at the gym while I wear my beloved Rounderbums.
Love it so much fits really well!
Store owner replied: We love to know you love it! :D
Comfy and breathable must-have underwear that lifts your butt and makes sure your package is in place.
Store owner replied: Dear Jeremiah We are so happy we were able to make you feel satisfied with the item! :) Thanks for sharing your comments with us!
I really enjoy wearing these boxers, normally I don’t wear anything. I will be buy some padded and enhancing boxers next. Excited for the next sale to purchase them.
Normally I don't go for trunks. Most ride up and are not terribly comfortable. But these buck the trend. They are super comfy and don't ride up at all. Plus they give a little extra lift in the back.
Store owner replied: We are very pleased to know we reached your expectations ;)
Great color combos, great fit!
Store owner replied: Thank you so much Travis! Happy to know you love your undies! :D
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?
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.
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.
