Its ultra-soft neoprene material wicks away sweat & moisture, while providing a secure and comfortable fit for most arm sizes. The armband protects your phone from the elements, but still allows you to access controls through the touch screen cover. With the armband, you can also customize a Safety ID, personally engraved to include all of your emergency contact information. Endorsed by Ironman®.HIGH VISIBILITY REFLECTORReflective covering provides high visibility for an extra element of nighttime safety.SECURE FITyurbuds are ergonomically designed to lock into place, avoid the nerve rich areas of the ear, and stay in comfortably for hours on end.SWEAT + WATER RESISTANCEDeveloped for training in any conditions.ULTRA-SOFTUltra-soft neoprene material wicks away sweat & moisture, providing a secure and comfortable fit.