LK-66 Lightweight Adult Bike Cycling HelmetRide Light. Ride Safe. Ride Fresh. Designed for everyday cycling and long rides alike, the LK 66 Lightweight Helmet combines advanced protection, superior ventilation, and antibacterial comfort so you can focus on the ride, not the weight on your head. Lightweight Protection You Can Trust Built with a PC shell + integrated EPS foam structure, the helmet effectively absorbs and disperses impact energy, reducing direct force to the head in the event of