GreatShield Stretchable Neoprene Fitness Sweat Resistant Sport Armband Case with Key Storage for Google Nexus 5 - Retail Packaging (Black / Black) Flexible sweat-proof neoprene strap lets this armband fit most people: the adjustable Velcro strap that could fit arms from 9.5 inches up till 14.5 inches Non slip rubber dots provides stronger grip Soft, itch-free material provides a comfortable touch with handy key pouch for your locker or other key Armband measurement: Point A: 24cm - 28cm / 9.5 in. - 11 in.; Point B: 28cm - 37cm / 11 in. - 14.5 in. The perfect cell phone accessory to have while running, jogging, biking or exercising