Bicycle Bike Seat Rain Cover Waterproof Polyester Material: polyester, PVC, EVA and nylon Size: custom OEM and ODM ... is welcom Bicycle Bike Seat Rain Cover Waterproof Polyester 1.Material:100%waterproof PVC (EN71standard), polyester, nylon,pvc, plush ,nonwoven and ... company ,event or bicycle race.(2) Because the fabric is waterproof , it is easy to clean. Moreover, it can protect the ...