3.5" Raised Toilet Seat: This toilet seat pad of ours can be elevated to raise the toilet ring by 3.5" / 88.9 mm, providing a comfortable toileting option for pregnant women, the elderly, the injured, and the disabled, and reducing the burden on joints. Compatible with Standard Round Toilets: This toilet needs to be installed underneath the toilet lid, which is required for the shape of the toilet, and fits most standard round toilets. Armrests with Soft Padding: The specially designed 1.4" / 35 mm thick armrest padding provides a comfortable and reliable grip and extra help when sitting or standing. Sturdy Materials and Construction: Mainly made of aluminum and high-strength plastic, the raised toilet seat is sturdy and durable, with a weight capacity of up to 300 lbs, which is safe for people of different body weights and easy to clean all over. 4-Step Installation: The raised toilet seat can be securely fastened with the included screws and washers without the use of tools, and does not take up much space in your bathroom after installation.