NIKE Distance Arm Band for Samsung Galaxy S4 (Anthracite/Volt, OSFM) 50% TPU, 34% Nylon, 10% Spandex, 6% PU Compatible with iPhone and Galaxy Updated stretch material for improved fit Compression molding for increased air flow Reflective Swoosh logo for enhanced visibility in low light conditions Easy access to ear phone port Hook and loop hood for easy entry and exit of phone Fused construction offers seamless comfort and durability Simplistic design minimizes distractions during workout Hook and loop closure combined with D-ring construction provides for secure and customized fit Water resistant pocket fabrication protects device against moisture