A hard-wearing all-around neoprene bootie that features Castelli's premium 3 mm high stretch neoprene, sealed seams, skin-out top edge to seal against the foot, and adjustable opening under the foot to work with any shoe.

Castelli has taken the best-selling Diluvio C and Diluvio Allroad booties and modified, improved and combined them into the all-new Diluvio UL. With improved fit and a better seal thanks to the neoprene enclosure at the top, large reflective rear tabs for visibility, and the flexibility to accommodate any type of cycling shoe, there's little this bootie can't handle.