Features: -This toilet seat is designed for individuals who have difficulty sitting down or getting up from the toilet. -Adds 5 to height of toilet seat. -Tool-free arms can be removed or added (arm sleeves and receivers are made of metal). -Heavy-duty molded plastic construction. -The locking device comes with larger, heavy-duty worm screw and locking plate for a safe, secure fit. -Easily attaches to toilet bowl, tool-free (fits most toilets). -Lightweight, portable, and easy to clean.