Polaris Slingshot Seat Covers by PRP with Online Seat Designer / Builder Want to change up the look of your stock Polaris Slingshot seats without forking over the coin for entire seat replacements? Look no further as PRP has you and your seats covered. These Slingshot seat covers by PRP install with ease over the factory Slingshot seats. They're using parachute cord on the bases to keep the cover from sliding around as you tear up the canyons. Made from marine grade vinyl to stand up to the elements for years to come. The marine vinyl also has built in UV protection to prevent fading.