Engineered to fit 1- and 2-piece round-front toilets, this Highline plastic seat features a single-hinge design that makes for easier cleaning. Innovative Quiet-Close technology prevents noisy slamming. Unique Grip-Tight bumpers hold the seat firmly in place and prevent shifting.. Single-hinge cover simplifies cleaning. Color-matched plastic hinges. Quick-Attach hardware for fast and secure installation. Grip-Tight bumpers hold seat firmly in place. Plastic