Industrial & Scientific" /> CENTOCORE molded, thick, polypropylene shell over wood core wont crack, chip, dent, flatten, flake, fade or peel like other wood seats. Super sanitary, non-porous, scratch resistant high-gloss finish that withstands cleansers and strong chemicals without staining or discolouring. Ergonomic contour fit. Impact absorbing heavy duty hinges. Corrosion-free hardware. Integrally-molded, permanent and sanitary color-keyed bumpers that won't loosen, collect dirt or fall off. Easy to install. Fits all elongated toilet bowls. Made in the USA