SumacLife Running Sports GYM Neoprene Armband Case Pouch for Nokia Lumia Windows Phone Smartphones Lumia 1020 / 920 / 520 (Black) SumacLife hardcore workout armband with earphone cord excess holder Provide excellent protection during sport, such as running, biking, jogging, walking, working out etc. Adjustable Touch fastener arm strap. Arm strap dimensions: 11' - 16' in. Keeps device dry while being active with sweat proof feature. Compatible with:4-5 inch smartphones