ePark LED Light Up Snap Bracelet Slap Bracelets Night Safety Reflective Wrist Band for Cycling Jogging Dog Walking Running Concert Camping Outdoor Sports High Visibility Designed for night running jogging, dog walking, concert, camping etc outdoor sports Very bright at night, high visibility protects you Three flashing mode: fast flash, slow flash, and full illumination Can be worn at wrist, kids bag, bike etc, 9.8 inches, diameter is about 2.76 inches Fit for people like sports, kids, senior citizens etc