Invacare's Clamp-On Raised Toilet Seat will attach to most commodes without tools, and raises the toilet seat 4.5". The clamp-on locking mechanism is easy to tighten with just one hand. For added stability, this raised toilet seat features rear seat wings and non-skid pads that make the attachment more secure. The seat itself is contoured for more comfort, and is made of easy-to-clean, durable molded plastic. For hygienic purposes, this raised toilet seat has a front recess. Weight capacity: 300 lbs.