THE ULTIMATE EARPHONE UPGRADE - Sport Pro tips let you experience a stay-in-ear grip designed to hold on and not let go until your workout is done-no matter how much sweat you work up along the way. Integrated SweatGuard protects earphone by keeping sweat & debris out and maintains clear path for enhanced sound COMPATIBILITY - Designed exclusively for the Jaybird X3, X2, BlueBuds X, and Freedom F5 earphones ENHANCED SOUND & FIT - Body-Heat Activated Memory Foam adapts to your ear canal and provides a perfect seal. Limits outside noise for a superior audio experience and enhanced bass so you can stay in the zone SUPERIOR COMFORT - Super-soft memory foam reduces earphone irritation and fatigue. Comply foam is 30x softer than silicone tip materials so you have the most comfortable listening experience during workouts. PREMIUM MATERIALS FOR A PREMIUM SOUND - The Original Memory Foam Earphone Tip. Made in the USA (of U.S. & imported goods) using proprietary memory foam materials for the ultimate in ear headphone upgrade