Featuring sturdy, chip-resistant polypropylene construction and a finish that won't stain or peel, the Stronghold toilet seat is ideal for commercial or institutional applications. Made of Solid Polypropylene - resistant to staining, fading, chipping and peeling Ergonomic contour adds additional comfort. An integrated handle allows the user to easily raise and lower the ring The Self-Sustaining Check hinge will prevent the seat from slamming and require a forced open and closure along with the check hinge functionality Toilet seats are not returnable to Kohler Co. if opened or outside of original packaging.