XD Collection LED Safety Armband With this safety armband with built-in LED, you can always stay visible in the dark. The armband is easy to wrap around your arm and will be ideal during late training sessions or adventures. Specifications: Color: blue Gender: unisex Material: TPU, polyester Dimensions: 22.2 x 1 x 5.4 cm (LxWxH) Package dimensions: 34.5 x 22.5 x 42 cm (LxWxH) Weight: 45 grams Battery type: 2x Li-ion (included)