Zipbuds Slide Sport Earbuds with Mic (Most Durable, Tangle-Free, Workout in-Ear Headphones) - Guaranteed for Life - (Black Sea) Performance Enhancing Sound - Powerful bass and dynamic clarity at any volume. Engineered for peak performance when you need it most..Connectivity Technology: Wired We've used Military Grade Bulletproof Fibers to ensure SLIDE is the most durable workout earphone you've ever used - And we GUARANTEE them for LIFE. Next-Generation Tangle Free Technology - Zipperless Zipper Cabling upholds the Zipbuds Promise of NEVER tangling. A secure fit that actually feels good! Our Exclusive Dual-Composite Silicone Ear Tips combine with our Sport Fit Mold to create the optimal combination of comfort and stability. SLIDE Sport Earbuds will feel good and stay in place through your most intense workout. Our Sweat-Resistant & Noise-Filtering Microphone Eliminates Unwanted Noise.