Castelli corsa shoecoverthe castelli corsa shoecover is stretchy for the perfect fit made from an ultra fleece water and windproof fabric features ultra fleece water and windproof fabric exceptionally stretchy for perfect fit neoprene cuff to keep water out ykk zipper kevlar fabric sole 6 14c 43 57f weight 74g pairbuy castelli footwear from chain reaction cycles the worlds largest online bike store