Flex Knee pads are for riders looking for soft pad comfort with the protection of a hard shell. Abrasion-resistant material covers the front and sides to give a full-on protection package. - Double layer custom foam for increased airflow and reduced weight - Upper calf muscle support to prevent pad from slipping - Center adjustment strap provides even tension above calf muscle and around top of pad - Custom idp polygon neoprene for superior protection and ventilation - Designed beyond CE EN 1621/1 Standards