Polaris 2878849 Lock & Ride Pro-Fit Sport Roof Durable injection-molded polycarbonate, structured to eliminate distortion in high heat conditions Integrated water channels drain water away from the cab Styled to match the lines of the RANGER XP 900 and provide superior fit and finish Lock & Ride: Quick and easy Snap-On mounting and removal with no tools Requires Sealing Kit (2879289; sold separately) when being used in complete cab system