What is the Self Grip LED? The Self Grip LED is an ultra-reflective, spring-fitted band that grips like magic. It has been designed to fit comfortably around your arm or wrist & has flashing LED lights that are visible at a distance of up to half a mile away. When can I use the Self Grip LED? Use the Self Grip LED band around your arm or wrist when out running or walking at night-time to improve your visibility, which will provide you with peace of mind. The spring-fitted LED band can provide up to 150 hours of illumination & is supplied with a battery. To ensure of total comfort the reflective band has a soft flocked lining.