The Rapidline Motion Mesh Ergonomic Chair is an elegant, medium back task chair with AFRDI, BIFMA and GREENGUARD Gold Certification. The 21 degree back tilt angle with 3 locking positions allow for exact back positioning, while the 3D adjustable arms and mesh back allow for breathability. Plus, with the Donati-dopo weight sensitive mechanism, seat slider and concealed lumbar cushion, you can strain less and stay comfortable for longer.