Castelli diluvio shoecover 16 the diluvio 16 shoecover is an extra tall version of the classic and much loved standard diluvio with a 16cm cuff and a fully waterproof zipper the 3mm neoprene fabric will stand up to the wettest and coldest winter riding conditions all seams are thermosealed for complete water protection with cleat and heel areas open for stability while walking the stretchy material easily pulls over your shoes while a waterproof zip closure aids entry yet prevents water from