NIKE Lightweight Running Arm Wallet/Phone Case (Wolf Grey/Blue Glow/Volt) (45%) lycra (32%) spandex (10%) polyester (5%) nylon (5%) pu Features Expandable pockets for secure convenient storage on-the-run. Lightweight Stretch band with hook-n-loop closure fits comfortably secure around arm Expandable Pocket for your Phone, iPod or other portable devices. I.D. Tag for Personalization and Identification. High contrast and embroidered Nike Swoosh logo for visible brand recognition