The Rounderbum Prime Boxer Brief is a men's long-inseam boxer brief cut from soft modal stretch jersey. It belongs to the Prime collection from Rounderbum, and its waistband carries the brand's Rounderwear logo. Rounderbum describes the modal as ultra-soft, amazing to the touch and able to wick away moisture. The fabric is also ultra-light and breathable, with a super stretch fit that molds to the body. Stitching along the legs helps the hems lie flat, so they are less likely to ride up. Both white colors pair a clean white body with a contrast logo band. One band is black with a pink accent, while the other is bright blue. A pink version of the style is listed too. At the front, curved seams shape a contoured pouch, and the back gives full seat coverage. Wear the Rounderbum Prime Boxer Brief under jeans, office trousers or gym shorts on long days.
Key Features
- Fit: Long-inseam boxer brief with a super stretch fit that molds to the body and fully covers the seat.
- Feel: Ultra-soft, ultra-light modal that feels smooth on the skin, breathes well and wicks away moisture.
- Pouch: Contoured front pouch shaped by curved seams for a natural, defined profile.
- Waistband: Wide elastic band with outlined Rounderwear lettering, in black with a pink accent or in bright blue.






