Door Bag with Knee Pad for Polaris RZR, Rear Passenger Side, White Provides a protective knee pad and much needed storage; Attaches to stock RZR door using factory screws; Made with durable, marine-grade vinyl; Backed with tear-resistant vinyl-coated nylon PRP PRP Door Bag with Knee Pad, Rear Passenger Side, White - E41-213 E41-213 UTV Storage