The Topside Helmet Light is a bright, USB rechargeable 3-in-1 helmet light with front, rear, or dual modes for safer cycling in traffic. With 7 modes and last mode memory function, this waterproof IP65 helmet light offers wide-angle visibility and long battery life for commuters and road cyclists. USB rechargeable and lightweight, the light can be used as front, rear, or dual light. Buy your bike lights at Halfords, the UK's largest bike accessories retailer.