New for 2015 the Flex knee offers excellent value for money. It features most of the innovation but at a lower price. Competitive pricing make this a go to pad for any rider.Features: Hardwearing, durable Nylon SPandex knee cover.,Double layer polygon perforated custom foam to increase air flow and reduce weight,Upper calf muscle adjustable strap to prevent pad from slipping,Center adjustment strap gives even tension above calf muscle and around top of pad,One Piece foam section covers front and sides of knee with a Plastic cap,Custom iDP polygon neoprene is light and offers great ventilation,Designed beyond CE EN 1621/1 standards to ensure maximum protection,Sizes - S/M/L/XL.