This clamp-on raised toilet seat from Invacare attaches easily to most toilets with a maximum bowl lip size of 1-3/4” without any tools. The clamp-on locking mechanism tightens easily with one hand. The comfortable, contoured seat is made of easy-to-clean, durable, molded plastic and raises your existing toilet seat by 5-1/2”. Non-skid pads on the underside prevent the seat from slipping. Rear seat wings allow for a more secure attachment. There’s also a deep front recess for easier hygiene. The seat is lightweight, making it easy to move on and off your toilet when necessary.