Slip-On Knee Guards Designed with D3O The Youth Launch D3O Knee Guard offers an excellent combination of impact-absorbing protection with a value-focused build for smaller riders. The CE-certified D3O insert works seamlessly with the slip-on design of the guard to provide all-day comfort and the confidence to try new trails. Features - D3O inserts - EN1621-1 Level 1 CE certification - Anatomically-shaped and asymmetrical shin guards provide pedal-friendly comfort - Slip-on fit with hook-and-loop adjuster - Perforated neoprene offers comfort & breathability