The seat of the stool is made of 16mm LDFP (or 26mm thick plastic-coated chipboard), the ends of the parts are covered with shockproof PVC edging. The metal frame is all-welded, made of 20x20 mm square section profile with a wall thickness of at least 1.2 mm and powder coated, resistant to chemical and mechanical influences. The free ends of the pipes are fitted with plugs made of impact-resistant polymers. The frame of the stool has polymer footrests preventing damage to the floor covering. Seat fastening is concealed - hexagonal bolts and lugs.