The Safety Light Waistbands offers great detection at night for hikers, campers, fishing enthusiasts, rollerbladers, skateboarders, runners, bikers, and walkers and of all ages. When wearing this high-intensity lighted waistband you will be clearly visible from over a half mile away. The light weight and comfortable design make them great for rollerblading, biking, running, or walking. The light can be either flashing or constant. The belt adjusts to fit up to a 36 inch waist. This easy to use personal safety product can be extremely effective while exercising in high-traffic areas. Battery included.