Perfect Fitness LED Safety Slim Pack Running Pack

Snug and comfortable fit along with expandable pocket provides walkers and runners a secure place to hold phone, keys and more Red light for increased visibility (you will need to remove the battery pull tab) Slim profile ~ no bounce Fits most cell phones Battery life of 72 hours (continuous mode) ~ 96 hours (flashing modes) Batteries: 2 CR2 batteries required (included)