1)Chooses high-grade Neoprene material manufacturing, so soft and elastic, wear-resisting, waterproof, prevent slippery, prevent collision, can be washed
2)Special design, apply to iPod 4G
3)Elastic magic stick is convenient for adjustment cuff size
4)Double plastic buttons, beautiful and easy, and increase the range to the arm, more extensive user use
5)Transparent surface cover, convenient manipulation
6)Can be make as your request, OEM are welcome