men's whoop 4.0 shorts with built in boxer/liner and whoop 4.0 sleeve brand new - boyfriend got as a gift but he doesn't like built in liners. shorts: Capture your data with performance apparel that supports you and your fitness goals. the Whoop Any-Wear Short with a 6.5" inseam features a lightweight top layer and compression lined underwear making it ideal for low-contact sports like running and cycling, or high-contact sports like jiu-jitsu or basketball. Designed with an internal WHOOP® pod to house your WHOOP 4.0 and keep it secure while you get your sweat on. sleeve: Free your wrist and lock in your workout with our Any-Wear Arm Sleeve. Designed as an alternative way to wear WHOOP® and capture your data. Made from durable nylon and elastane, Any-Wear Arm Sleeve provides compression and safeguards your WHOOP 4.0 when you’re breaking a sweat. Ideal for in-game use, contact sports, and other max-effort workouts. To use Arm Sleeve, remove all hardware from your WHOOP 4.0 device and simply slide it into the slot.