GU Angqi Football Skateboard Hiphop Kneecap Safe Elbow/Knee Pad Protector Guard,Adult Material: Sponge Color: Black, Blue Child: 8.27*4.72inch Adult: 9.06*5.71inch Multi-functional, good for cycling ,skiing, skating, snowboarding, inline skating, football, basketball and other Extreme Sports; Also support the knee joint from any sort of injury Has light weight properties and a great impact absorption qualities. these guards spring back even after multi washing