Toilet Seat Riser adds 2 3/4" height to your existing toilet seat. Attaches in about 10 min. to the underside of your existing toilet seat using 10 stainless self tapping screws included. By positioning the risers yourself, you are able to customize the fit to your specific toilet bowl assuring a sturdy support that will not shift. All hardware is included to re-attach seat and lid to bowl. After installed seat and lid continue to lift back against tank for cleaning. Screwdriver and pliers required for installation. Sturdy white plastic supports up to 500 lbs. Easy to clean, latex free. Product non-returnable.