L4y3r Z3r0

The base layer is the one piece you never think about, right up until it fails you halfway through a set.

These men's performance boxer briefs are cut from a microfiber blend with real 4-way stretch, so they move when you do instead of bunching where you don't want them to. Sweat goes through the fabric instead of sitting on your skin. Flat-lock seams mean nothing rubs on a long run or a longer day. The waistband is stamped with the Amped AI mark and doesn't roll. Turn around and the rear graphic reads Let's Get Amped with Amped AI, which nobody asked for and everybody's getting.

Why you'll live in them:

• Moisture-wicking microfiber — stays dry through the session and the drive home
• True 4-way stretch, so squats and sprints don't turn into a readjustment
• Flat-lock seams, zero chafe, even at hour fourteen
• No-slip waistband that stays where you put it
• Sublimated print that won't peel or crack, because it's in the fabric rather than on it
• Rear graphic for the people behind you on the leg press

Closing deals. Closing sets. Closing tabs at 2am. Low-latency comfort, zero downtime.

Let's get amped. 🔌

Size guide