Black New Elastic Sports - Running Armband Cover Case Skin for Iphone 4s ,4 ,4g, 3g, 3gs,ipodtouch 3 and 4 Made of lightweight, breathable and stretchable neoprene material,arm band will keep your iphone4/4s safe and Protected. Double adjustment slots to fit any arm sizes for skinny to giant. Very sensitive and responsive for all touch screen operations. Full screen protector to guard against scratch and little rains,Built-in key pouch for your spare key or a chewing gum. Compatible with all carriers incl AT&T, Sprint Nextel, T-mobile & Verizon Wireless.