QuadWorks QUAD WKS GRIPPER SEAT COVER 31-55005-01 POLARIS SPORTSMAN 400 '05, SPORTSMAN 450 06-07, 800 Replacement seat covers for sport and utility models Made from the finest UV resistant heavy duty marine grade vinyl and are double stitched for durability Gripper Seat covers provides not only durability but top of the line seat traction....great for racing on wet or muddy conditions