For kids who know no fear, a little extra protection is always a good thing. Graded down from our adult sized pads, Sendy DH knees are for kids who get sendy. The open back Sendy DH knee pads feature certified D3O® LP1 Compact impact protectors which have been designed for smaller joints. FEATURES Open-back design for easy install and removal. Removable D3O® LP1 Compact certified impact absorbing foam. Perforated neoprene enhances protections from abrasion. Foam padded side walls offer additional coverage. Extended foam shin pad for extra protection. Material: 25% Nylon, 25% Polyester, 22% Polyethylene, 18% Polyurethane, 10% Spandex.