KOHLER K-4662-A-0 Lustra with Quick-Release Hinges Round-front Toilet Seat with Antimicrobial Agent, White KOHLER plumbing products mean beautiful form as much as reliable function Round, closed-front toilet seat with cover Sturdy, chip-resistant polypropylene with a finish that won't stain or peel Includes an antimicrobial agent formed into the plastic which inhibits the growth of odor causing bacteria, mold and mildew on the toilet seat