EASIER TO KEEP CLEAN: Made of 100% pure polypropylene, the most stain-resistant toilet seat material available; Smooth, flat underside and rounded edges, easily wipes clean. BETTER THAN CHEAP PAINTED WOOD and THIN FLIMSY PLASTIC: Solid color throughout will not chip, peel, or fade; SAFE & SECURE tested to 400 lbs; 4 bumpers evenly distribute weight; Stainless steel mounting hardware holds the seat firmly in place.