Engineered to ensure a proper fit on one- and two-piece toilets, this Brevia seat complements a wide variety of round-front toilet designs. This soft-close toilet seat features innovative technology that prevents noisy slamming. Unique Grip-Tight bumpers hold the seat firmly in place and prevent shifting. Quiet-Close™ lid closes slowly and quietly without slamming. Grip-Tight bumpers hold seat firmly in place. Quick-Attach® hardware for fast and secure installation. Color-matched plastic hinges. Toilet seats are not returnable to Kohler Co. if opened or outside of original packaging. Plastic