Polaris RZR 570/800 Rear Cargo Box By SuperATVFree Shipping in the Lower 48 States SKU: RCB P RZR 001 DETAILS Insulated Cooler Get a Rear Insulated Cooler Cargo box from SuperATV for your Polaris RZR 800 or 570 and get the party started. We built this box with up to 3 thick insulating foam, heavy duty rubber latches, and a lip seal on the lid. What does that mean for you? Ride through mud and creeks, or ride over rocks and branches. No matter what you do, your cargo will be safe. And with a 30