The SIHOO M18 Mesh Ergonomic Office Chair is engineered for superior comfort and support during long work hours. Featuring a high-back design with breathable black mesh upholstery, this chair keeps you cool while providing adjustable lumbar support to reduce back strain and promote healthy posture. The chair offers pneumatic seat height adjustment (typically 17″-21″), a reclining backrest with tilt tension control, and adjustable 3D armrests for personalized comfort. The sturdy five-star base with smooth-rolling casters ensures 360-degree swivel and easy mobility. With a weight capacity of up to 300 lbs and BIFMA certification, the SIHOO M18 is built for durability and reliability. Easy to assemble, this chair is an excellent choice for home offices, workstations, or professional environments.