KOHLER K-4731-C-96 Stronghold Elongated Toilet Seat with Integrated Handle and Check Hinge, Biscuit Sturdy, chip-resistant polypropylene with a finish that won't stain or peel Ergonomic contour adds additional comfort to the seat Integrated handle allows the user to easily raise and lower the ring The check hinge will stop the seat from leaning back and applying pressure on a tank or a flushometer