... -resisting, waterproof, prevent slippery, prevent collision, can be washed 2)Special design, apply to i9300/i9100/htc...3)Elastic magic stick ... buttons, beautiful and easy, and increase the range to the arm, more extensive user use5)Transparent surface cover, convenient manipulation6)Can ... be make as your request, OEM are welcome red Arm band for SAMSUNG kinds Neoprene material