The modal is so soft- I have in a bunch of colors. It always seems to sell out quickly so order it when you see it.
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
Te presentamos la Colección Basics Black Modal de Rounderbum®, donde la comodidad se encuentra con el estilo en perfecta armonía. Confeccionada con la más fina tela Modal, reconocida por su suavidad excepcional, transpirabilidad y durabilidad, la Colección Basics Black Modal asegura una sensación lujosa contra tu piel. El Modal, derivado de árboles de haya, no solo proporciona un nivel incomparable de comodidad sino que también cuenta con propiedades que absorben la humedad, manteniéndote fresco y seco durante todo el día. Experimenta el siguiente nivel de comodidad y confianza con la Colección de Tela Modal Basics Black de Rounderbum – porque cada guardarropa merece la base de la excelencia. Eleva tus básicos, abraza el lujo del Modal, y haz una declaración en negro⚫.
¿Recuerdas esos viejos y aburridos calzoncillos ajustados? ¡Bueno, aquí están reinventados! Te presentamos la nueva generación de bóxers tecnológicos que moldean tus glúteos como nunca antes!
Con relleno oculto que proporciona volumen y definición instantáneos. Cubre toda tu parte trasera sin toda esa tela extra que se encuentra en los bóxers largos, bóxers o trunks.
¡Siéntete genial en tu propia piel!
Comodidad y diseño superior en ropa interior moldeadora para hombres. CARACTERÍSTICAS
- [PADDED Tech]®
- Más glúteos al instante
- Bóxer de corte moderno
- Efecto Glúteos Redondos
- Relleno permanente
Composición
Composición
Cuidado
Cuidado

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.



