SumacLife Mesh Workout Armband for BLU Energy X/BLU Studio Energy 2 / BLU Vivo Air/BLU Advance 4.0L, Black SumacLife armband; Stylish, lightweight and durable enough to hold up against any workout Mesh exterior construction allows air flow to circulate to avoid any moisture build up Neoprene backing and adjustable strap compliment your arm with a soft and gentle texture Clear plastic window protects your phone while still allowing full touch screen functionality Features a side earphone cord excess holder and adjustable Touch fastener strap for a comfortable fit