About this item EXCLUSIVE FOR POWERBEATS PRO 2: Precision-engineered for Powerbeats Pro 2 earbuds. Not compatible with Powerbeats Pro (1st Gen) ensures perfect nozzle lock & seal. 5X LONGEVITY: 5 PAIRS (XS/S/M/L/XL) replace lost/worn tips or customize fit for workout/music/calls. Double the standard kit! BASS-BOOSTED SEAL: 25% thicker silicone walls vs. stock tips blocks gym noise while enhancing the low-end sound. ZERO-SLIP GRIP: Laser-etched texture + sweatproof coating keeps earbuds secure during sprints/boxing/yoga. No readjustments needed! HYPOALLERGENIC COMFORT: Medical-grade silicone prevents irritation. Oval-shaped core distributes pressure evenly wear all day pain-free. Size: 2 x 0.5 x 0.5 inches.