With a specially contoured body for maximum protection and comfort without the bulk, KP Pro pads are our top-of-the-line knee pads for skaters who aren’t afraid to push their limits. Specially contoured body for maximum protection & comfort without the bulk Heavy duty contoured EVA memory foam High-density, impact-resistant cap securely attached with reinforced rivets Neoprene butterfly back closure for easy on & off without having to take your shoes on and off Top elastic & bottom web adjustable straps To ensure a perfect knee pad fit, measure circumference of extended knee and match to the sizes listed below: S 12.5 – 14.5 in (32 – 36 cm) M 14.5 – 16 in (36 – 40 cm) L 16 – 17 in (40 – 44 cm) XL 17 – 19.5 in (44 – 50 cm)