Comply Isolation Noise Cancelling Memory Foam Earphone Tips for Anker Soundbuds, KZ ZST, SoundPEATS Q30, Symphonized NRG 3.0 & More, Premium Replacement Noise Reducing Earbud Tips T-500(S/M/L, 3 Pair) THE ULTIMATE EARPHONE UPGRADE - Isolation replacement eartips are engineered to create a custom in-ear fit to block out external noise and provide a superior audio experience with enhanced bass COMPATIBILITY - 500-Series fits AKG, Audio-technica, JBL, Harman Kardon, and more. Multiple core sizes allow you to find the perfect fit for your earphones.Find your compatibility here: Complyfoam.com/Compatibility ENHANCED COMFORT - Super-Soft Memory Foam reduces earphone irritation and fatigue while reducing outside noise. Comply foam is 30x softer than silicone tip material so you have the most comfortable earphones ADVANCED SOUND & FIT - Body-heat activated memory foam adapts to ear canal to provide a perfect seal and snug fit to keep your earbuds in place while blocking external sound 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