Come and see our amazing products. Backpack reflective rain cover is made of waterproof polyester,its max capacity is 151.416gal.The Elastic and Cross Adjustable Buckle Straps provided extra stability and 50% more coverage, make sure your backpack get fully covered, protect your backpack even in heavy wind.It is nessassary in rain day.Because it has a reflective strip design,it is very useful in emergencysituations at night. Pls confirm with us about the packing info, stock color and exact production time before placing your order.