iGadgitz Blue Reflective Anti-Slip Neoprene Sports Gym Jogging Armband for Apple iPhone 4 HD & 4S 16GB, 32GB & 64GB Textured dimple effect on back and straps grips the armband in place. Custom made for Apple iPhone 4 HD & 4S. Produced from superior quality neoprene with reflective banding. Access to headphones and all controls, including full use of touch screen. Secure adjustable fastener. Minimum arm circ 26cm; Max 44cm Water resistant. Perfect for jogging, cycling, gym etc.