The Endurance Stool features a durable, one piece, rotationally molded design for increased strength. Constructed of high impact "no break" polyethylene. No steel or wood components. Sound dampening. Easy to clean, sanitize and maintain. Bolt to the floor via pilot holes with hardware of your choice. Passes Flammability UL 94 HB. Tested to ISO 22196 showing a greater than 99% reduction in bacteria. Flame Retardant (passes Cal 133) test reports available upon request. Manufactured to ISO Quality Standards in the USA.