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 |
Descripción
Descripción
Tomamos nuestras famosas [TECHS] y las convertimos en el underwear de rendimiento más innovador que existe. Específicamente diseñado para actividades deportivas que requieren movilidad y una mayor sensación de compresión, soporte y sobre todo... una apariencia física bien redondeada. ¡Ahora puedes verte de lo mejor MIENTRAS haces ejercicio y visualizar tus resultados más rápido!
¡MOLDEANDO TU JUEGO!
Agrega algo de tecnología a tu ropa interior y tu entrenamiento. Nuestro diseño de banda robusta da soporte excepcional con el beneficio adicional de un efecto push-up. La bolsa frontal no solo es súper cómoda, mantiene todo seguramente en su lugar durante los entrenamientos más vigorosos, al mismo tiempo dando algo de elevación. Menos tela con la parte posterior abierta hace que el entrenamiento sea más fresco y frío.
CARACTERÍSTICAS
- [LIFT Tech]®
- Elevación y soporte
- Banda cómoda anti-enrollamiento
- Mantén tu parte posterior 100% fresca
- Tela fresca y seca
- Súper estiramiento 8 direcciones
- Elástico absorbente
- Construcción anti-olor
COMPOSICIÓN Y CUIDADO
- 85% Nylon 15% Elastano
- Lavar la ropa por separado. Usar detergente para lavado a mano o lavado a máquina a 30 grados. Por favor no usar blanqueador o suavizante de telas. No exprimir, secar colgando a la sombra o secar en secadora a baja temperatura. No planchar.
Composición
Composición
Cuidado
Cuidado
- Reviews
- Questions
- material
- back
- grip
- workout shorts
- places
- bums
- love
- sexiness
- wedgie
- medium
Love the fit!
I got this for working out but I use it for almost anything because the material feels great and the fit is perfect. The waistband doesn’t ride up in the back when you wear jeans or shorts which is an issue I have with other brands!
Rounderbum USA
Thanks Tony J. Hope you enjoy it a lot :D
I really liked this comfortable one.
Is very comfortable
Rounderbum USA
Thank you for your words, we are glad to know you have a great purchase experience! :)
It’s a bit loose
Best workout/running/gim jocks ever
Impressive jock to go to the gym or run into. Holds everything in place and provides a feeling of sexiness at the same time. This is top quality stuff.
Rounderbum USA
Thank you for your comments Xavi! So glad to know you liked it :D
Douceur et confort
Très bonne expérience. Tissus doux et confortable.
Our Techs
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.













