Featuring sturdy, chip-resistant polypropylene construction and a finish that won't stain or peel, the Lustra toilet seat is ideal for commercial or institutional applications. Round open-front seat. Sturdy, chip-resistant polypropylene with a finish that won't stain or peel Includes an antimicrobial agent that protects the toilet seat from odor- and stain-causing bacteria, mold and mildew. Antimicrobial agent does not protect the user from disease-causing bacteria. Self-sustaining check hinge Toilet seats are not returnable to Kohler Co. if opened or outside of original packaging.