Fixings - The fixings are made from metal so they are strong unlike plastic fixings. They are top fixing hinges so they fit from the top of your toilet. Ergonomic Design - The toilet seat base has a round edge which sits nicely on the toilet, ensuring that your body only touches the seat when sitting on in. Comfort - The toilet seat has 4 built in non-slip buffers which stop it from moving around once fully fitted into place. Antibacterial Plastic - The ZENO toilet seat is designed from plastic which is easy to clean so that bacteria does not remain on the toilet seat. Soft Close - The toilet seat is designed to close slowly without slamming. It does not make any noise when it closes as the mechanism allows it to close at a slow speed. Fits Toilets - Fits most D-Shape toilets.PRODUCT DESCRIPTION ZENO D-Shape Toilet Seat: The Toilet Seat is made from Plastic. It has a slow soft close mechanism which ensures that there is no sound when the toilet seat closes. The Metal fixing hinges are top fixing and are long lasting. Specifications: Overall Size: Hole Size: Fitting Adjustment: Colour: White