SumacLife Meshy Running Sports GYM Armband Case for Blackberry Z 10 / Q 10 (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. Mesh armband ,breathe freely.