Ambush protectors are ready for the downhill cups. Proven D3O smart foam technology used across motocross to road racing bikes ensures plenty of safety with light weight.the open design allows you to put them on without having to take off the sneakers.the sides of the protectors are also sufficiently padded for even more protection from all angles. Fastened with two Velcro fasteners. The protectors are made of perforated neoprene, which ventilates very well even on hot days. easy to put on, no need to take off shoes extended shin guards with EVA material certified D3O foam