Product details:

Designed for individuals who have difficulty sitting down or getting up from the toilet. Allows individual to use existing toilet seat and lid. Tool-free arms are 19.75 apart and can be removed or added as needed. Arm sleeves and receivers are made of metal. Heavy-duty molded plastic construction. Lightweight and portable. Easily attaches to toilet bowl. No tools required for installation. Easy to clean.Designed to help withstand a weight capacity of up to 300 lbs
Removable arms allow you to modify its length for convenient usage
Plastic seat construction makes this seat riser durable