Designed at request of Team Sky, the Castelli Diluvio Pro Shoecover is intended for keeping your feet warmer in cold and wet conditions. Featuring 33% neoprene and a taller cuff height to add more coverage in the lower leg. The top edge is raw cut for a flush fit next to the skin to seal out the elements, keeping water out while remaining very stretchy and easy to put on. Reflectivity on the heel provides improved visibility in low light conditions.