Features:

1. Powered with USB rechargeable battery, this LED slap band provides 360 degree ultra-high visibility in dusk and nighttime activities,The brightness is much higher than the glow in the dark glow sticks. That means greater safety for you, your children or your pet from negligent and distracted drivers
2. Velcro Closure Adjustable size 11.02 to 13.78 inches, it fits on both adult and children, men and women, by simply slap wrap it to different position, such as wrist, ankle, and arm. If you want to use it around the biceps, please check the dimension to see if it can fit on
3. No battery request, flashing up to 3 hours and can be fully charged in half an hour.Three Flashing Mode: fast flash, slow flash, and full illumination
4. Designed with comfort in mind. Top material is super thin high strength nylon material and bottom layer with Lycra fabric to make it soft to prevent fatigue and discomfort for wearers of all ages. Comfortable On Both Children And Adults.
5. This glow bracelet has versatile application, such as but no limited to: runners, cyclists, campers, night walkers, auto safety, combine with safety vest, child safety, runner gear, longboard players.

Package included:1 x Armband,1 x USB