Fulfilled by our friends at ShredLightsThe perfect pack for adding lights to any helmet or curved surface. Tired of blinding your other riders with your helmet light? Simply adjust the angle of the SL-200 with Dual Lock velcro by 3M. Years of research and development have brought this perfect combination of reliability and ease of use to a helmet near you. Now with a 3x bigger battery for up to 150 hours of battery life and 200 lumens of maximum brightness per ShredLight.