UnderXLabs

It keeps you focused on movement, not readjustment. Lycra® stretches with your body and snaps back cleanly, so the fit stays stable through runs, lifts, and long sessions. That consistent recovery helps prevent shifting and bunching, which keeps friction lower where motion repeats. You feel steady and in control from warm up to the final mile, and it stays just as easy when the workout is done.

SILVADUR™ helps keep odor down, so you stay fresh all day. The 10 to 15 mmHg support range holds you in place without feeling restrictive. Temperature control helps prevent heat from building up and keeps your testicles closer to an optimal temperature. You feel dry, secure, and supported, which makes this an everyday pair you can train in and keep on.

We measure where heat builds, where fabric shifts, and where friction starts, then remove anything that does not improve the wear. Fewer seams. Fewer layers. Cleaner tension. Every cut and stitch earns its place through testing, not tradition. The result is underwear that feels quieter on the body, stays stable through training, and wears just as clean when the workout is over.

Through our Best Pair Guarantee plan, if you’re not completely satisfied within 30 days, you can return or exchange your underwear—no questions asked. This makes your purchase completely risk-free, letting you focus on comfort, fit, and performance. We want every experience to feel effortless, giving you confidence in every choice.