Our best-seller classic-style ergonomic task chair with distinctive seat and backrest shaping, and unique no-slouch lumbar support. Spectrum features a heavy-duty multi-adjustable mechanism, with wide-range seat and back support. The backrest is uniquely contoured providing powerful lumbar support. The seat features distinctive contouring for enduring comfort and support, and is available in multiple sizes to suit the full spectrum of users. The Spectrum 200 is designed for bariatric users and is recommended for users up to 200kg.