COMPATIBILITY: Fits a bare iPhone SE (new iPhone released in March 2016) or a bare iPhone 5S (older iPhone) *only*. If you own a different device, then please search Amazon for the appropriate TuneBand. ACCESSIBILITY: Durable silicone skin allows access to all ports, buttons, and cameras. Fingerprint Home button is also accessible. Enjoy unobstructed access to your music and apps! COMFORT: Two (2) soft, elastic Velcro straps accommodate arm circumferences between 7 – 18. See product description regarding longer and shorter straps. PROTECTION: Two (2) screen protectors cover front of iPhone SE / iPhone 5S, and contain no adhesive. CONVENIENCE/CHARITY: Two-piece design means you can use the silicone skin as an everyday case, and then attach the elastic strap when exercising. Green and yellow versions support charities that are close to our hearts.