Universal Workout Armband [Black] for BLU Vivo Air LTE, Air, Life One, One XL, Studio G, X Plus, X, Energy Constructed with durable nylon and neoprene. Dual zippered system ensures phone never falls out. Inside pocket perfect for holding cards, keys, money etc. Hook-And-Loop Fastener flap perfect for wrapping excess headphone cord around. Rubber stripping inside prevents phone from sliding around. Adjustable Hook-And-Loop Fastener strap fits nearly every sized arm. Headphone cord slot on bottom of armband lets you listen to music while keeping your phone secure | Interior Pocket Dimensions: L: 3.5in W:0.8in H: 6.5in Suitable for BLU Vivo Air LTE, Air, Life One, One XL, Studio G, X Plus, X, Energy