PRP Door Bags with Knee Pads for Polaris RZR PRP Door Bags offer additional storage options and knee protection for your Polaris RZR factory doors. Constructed from water-resistant marine-grade vinyl, it features integrated knee pads that shield against impact during bumpy rides or while getting in and out of the vehicle. Features: Perfect size for holding cell phones, water bottles, goggle rags and other compact items Knee pad protects you from hitting the door in rough terrain Attaches to the stock door, using the OEM screws Made with durable, water resistant marine-grade vinyl Note: Not compatible on RZR models with OEM speakers on door