This elevated toilet seat ensures you a safer and more secure fit than ever. The locking device consists of a large, heavy-duty worm screw with locking plate which is engineered to fit securely on almost any toilet. Heavy-duty molded plastic construction allows the product to remain lightweight without sacrificing strength and durability. Arm sleeves and receivers are made of metal. It's comfortable padded arms are versatile, and can be removed without tools making transfer easy. The 5 inch high elevated seat and padded arms will help individuals who need a boost sitting down or standing up from the toilet. Seat width is 17 inches and seat depth is 16.5 inches. The seat weighs 6 lbs. Lightweight, portable and easy to clean.  The width between the arms is 18 inches. Weight limit is 300 lbs. The product is protected by a limited lifetime warranty.