Polyurethane

These are “bare” seats with no fabric, cushion, or leatherette upholstery. They are made from hard plastic (ABS/Nylon) or molded polyurethane (PUR), which has a slightly elastic texture. It is the “silent hero” of heavy-duty professions. If you are looking for a stool for a workshop, garage, or industrial space, this material is the obvious choice. It withstands impacts, scratches, oils, acids, and harsh chemicals, and can literally be cleaned with a damp cloth.