Protects your seat from the sun & rain! Seat-Slicker Seat Covers feature a super-soft, waterproof polyester knit fabric that is comfortable enough to leave on your seat while your ride. The single-piece construction means no seams for water to leak through. The UV-resistant, waterproof fabric protects your seat from sun, rain, and dew. The sturdy elastic cord & cord lock keep the cover in place on bike seats up to 8in x 10in. Stylish fabrics help you find your ride in a sea of bikes and can turn old, ripped seats to brand new in one easy step.