Material: PU (seat and backrest), plastic base. Acc. to DIN 68877. Ideal for production and laboratory work. Ergonomically shaped backrest and seat with integrated lumbar support, pelvic support and rounded seat front edge. Permanent-contact backrest with height adjustment Continuous seat-height adjustment by safety gas spring with protective cover Surface is washable and can be disinfected GS-certified 10 year warranty Delivered unassembled. Sustainability Recyclable due to the absence of composite materials. Durable (10-year guarantee). Awarded the “TÜV Rheinland certified - tested for emissions and harmful substances” test certification. Office chair Basic PU foam, seat height 440-620 mm Load-dependent dual casters with brakes for hard floor surfaces. Won’t roll away in unloaded condition. Resistant to sharp objects. Height backrest: 380 mm. Seat: W 440 x D 410 mm. Base Ø: 640 mm.