The Layne™ toilet seat is compatible with a wide variety of elongated one- and two-piece toilets. This toilet seat features innovative KOHLER® Quiet-Close™ technology that prevents slamming for a quieter bathroom environment. 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.