D'COR Seat Cover Black/Grey Black Ribs 30-10-502 Riders know how important it is to maintain control of their bike. Our seat covers give you the durability and performance you need. Sewn in-house at D’cor, each seat covers feature a 12 oz Hi-tac rubberized vinyl that has been developed though our work with factory race teams. This highly durable, yet lightweight material offers unprecedented traction. Each seat cover is sewn with a nylon thread that increases durability and adds to the overall strength of the cover.