iGadgitz Black Reflective Anti-Slip Neoprene Sports Gym Jogging Armband for Samsung Galaxy S2 i9100 Android Smartphone Cell Phone. (SUITABLE FOR AT & T MODEL ONLY (model number SGH-I777) Textured dimple effect on back and straps grips the armband in place. 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. Not suitable for Skyrocket model.