Strong Support - The breathable woven mesh promotes an ergonomic, upright posture while hugging your lower back. The padded cushion on the flip-up armrest enhances comfort. Ergonomic Design - The contoured frame along the spine provides stable back support. The elasticity of the mesh enhances comfort for the back. Safety Certified - All materials are BIFMA certified, guaranteeing safety and durability through a series of reliability and stability tests. Exceptional Quality - A high-quality gas lift, sturdy base, and durable wheels ensure the chair's quality and long-term use. Adjustable Feature - The adjustable flip-up armrest allows for versatility with different desk setups. You can also customize the height, rotation, and tilt to your preference.