Round Toilet Seat: This is an round toilet seat with a size of 16.5*14.2(Standard Round) inches, suitable for most America toilet seats for round toilets. Quiet close: The toilet seat lowers slowly and closes silently to eliminate banging noises, prevent slamming, and never wake your family up in the middle of the night. Anti-slip and not loose: There is an anti-slip pad under the hinge to increase friction and prevent slipping. There are 4 bumpers at the bottom to improve the stability of the toilet. Thickened material: The standard toilet seat is made of high-quality PP material, which is scratch-resistant and durable, easy to clean, stronger than ordinary plastic. Easy to install and maintain: This product uses quick-release screws to make installation and maintenance easier for you.