<p><b>Product Description:</b></p> <p>Retrolife toilet seat uses soft-close technology which allows the seat and lid to close slowly and quietly with no slamming or pinched fingers. With 4 rubber bumpers, the seat no-slip and does not shift around, and stays firmly attached to the toilet bowl.This Retrolife toilet seat combines subtle styling and innovative technology.The round toilet seat is ergonomically designed, and it is comfortable to seat. Use high-quality, white polypropylene plastic which is more durable than other ordinary plastic materials.</p> <p><b>NOTE: </b></p> <ol> <li>SIZE---This is a round toilet seat which is suitable for most standard round toilet seats (Length 16.42-16.81 inch, Width 14.37 inch, Height 2.24 inch, Mounting hole distance 5.12-5.9 inch). Please measure your toilet bowl to determine the size you need before ordering.</li> <li>Accessories---It comes with 1* Retroilfe round toilet seat, 2*long metal screw bolt, 2*oval washers, 2*round washers, 2*metal wing nut,1*user manual.</li> </ol>