This Cotton White Toilet Seat uses its SoftClose Hinge Technology to eliminate the toilet seat slam that burdens other toilet seats. With its solid high gloss polypropylene design, this toilet seat is not only durable, but also has a comfortable ergonomic design. The mounting hardware is included to ensure easy installation. Polypropylene construction Elongated closed front toilet seat and cover with softclose hinge system Resistant to chemicals and cleaning agents Top tightening mounting bolts offer above bowl installation Mounting hardware included