The Rounderbum Lift Tech Boxer Trunk proves that underwear can do more than cover—it can enhance. Designed with Rounderbum's patented Lift Tech system, this trunk integrates hidden elastic bands that discreetly lift and shape your glutes for a naturally fuller look. Unlike padded underwear, the enhancement comes entirely from smart design, so you feel just like yourself—only sharper and more confident.

The trunk cut delivers the perfect balance between a brief and a boxer. Shorter legs keep lines smooth and tailored under clothing, while still offering the security of fuller coverage. This silhouette works under everything from slim jeans to tailored pants, giving you freedom of movement without sacrificing style. The hidden Lift Tech bands are seamlessly built into the garment, staying undetectable while improving the way your clothes fit and drape.

Comfort is at the core. The 93% cotton, 7% elastane fabric blend offers the softness of breathable cotton with the stretch and resilience of elastane. It moves with you during workouts, long commutes, or busy nights out, holding its shape while keeping you cool and comfortable. Reinforced stitching and a supportive waistband make this a trunk built for repeat wear, maintaining both its lift and structure wash after wash.

Everyday function meets elevated design. The Lift Tech Boxer Trunk is lightweight enough for daily rotation, polished enough to feel like an upgrade, and engineered for durability. Whether you're heading into the office, hitting the gym, or stepping out for the night, it delivers a boost of confidence without compromise.

Available in Black, Blue Ice, and Heather-Charcoal, and in sizes S–XL, this trunk is a versatile essential that redefines what men's underwear can achieve: natural lift, long-lasting comfort, and modern style.
Care Made Simple:
Wash separately. Hand wash or machine wash at 30°C with mild detergent. Do not bleach or use fabric softener. Do not squeeze. Hang to dry in the shade or tumble dry low. Do not iron.