This hinged toilet seat elevator adds 3.5 inches to the height of any round toilet. This elevator lifts easily for removal or cleaning and fits on your existing round toilet seat. The Hinged Toilet Seat Riser Fits most standard round toilet seats, adding 3.5 inches of height. It is ideal for individuals with mobility issues that make it difficult to sit & stand. It installs safety and quickly between your toilet bowl and the existing seat and is designed for easy cleaning.