T-chair swivel chair conforms to EN 1335. Flexible polypropylene backrest. Back and seat upholstery made of CFC-free polyurethane foam. Upholstery covers in Torso (95 % polyester, 5 % elasthan) fabric. Seat and backrest covers can be removable and washed. With or without universal armrests or armsupports (height, breadth and depth can be adjusted). Five-star base comes in four versions: plastic base (flat), plastic base (ascending) basic dark, polished or chrome-plated die-cast aluminium. Hard castors for carpeting; as an option with soft castors for hard floors. Also available as a version with adjustable seat depth and backrest height.