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
We took our famous [TECHS] and turned them into the most innovative performance underwear out there. Specifically engineered for sports activities that require mobility and a greater sense of compression, support, and above all… a well-rounded fitness appearance. Now you can look your best WHILE working out and visualizing your results faster!
Performance boxer brief that features our Smart Neoprene Cup™ that naturally adds volume to your frontal anatomy and comfortably holds your junk. Made of an incredibly sleek moisture-wicking fabric that shapes your thighs while breathable ventilated panels keep you fresh where your body sweats the most. Ideal for any type of exercise where you need ample frontal space and without squashing your most prized possessions!
FEATURES
- [PACKAGE Tech]®
- Frontal Space & Volume
- Enhance Your Package
- Inseam: 7” Long - Anti-Roll Up Leg
- Cool & Dry Fabric
- 8-Way Super Stretch
- Absorbent Waistband
- Anti-Odor Construction
Fabric
Fabric
Care Instructions
Care Instructions
- Opiniones
- Preguntas
calidad y comodidad
Es un producto que considero la relación costo-beneficio-calidad es la correcta. Es un producto de muy buenos materiales y es super comodo, 100% recomendable para uso diario, deportivo, etc.
Rounderbum MÉXICO
Hola Moises Es un verdadero placer leer tan excelentes comentarios. A nombre de todo el equipo te agradecemos por formar parte de esta gran familia :)
No sé si es para el gym
Me quedó muy bien, solo que es mas pequeño de lo que pensaba. En la parte de las nalgas y el ***** la tela es muy delgada, entoncesn en el gym se te vería.
Rounderbum MÉXICO
Hola Fernando Este Workout brief esta diseñado para actividades deportivas que requieren de movilidad y mayor sensación de compresión. Además esta confeccionado con una tela que expulsa la humedad y da forma a tus muslos, mientras que los paneles ventilados y transpirables te mantienen fresco donde tu cuerpo más suda, ideal para cualquier ejercicio :)
Excelente
Me encantan
Rounderbum MÉXICO
Gracias por compartirnos tu experiencia de compra ;) Saludos!
TY
Excelente
Muy buen producto 100% recomendable
Rounderbum MÉXICO
Gracias por tu preferencia, clientes como tú hacen la diferencia.
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.









