QUALITY AT THE BEST PRICE Our chair is a professional chair manufacturer. All parts are carefully selected. Passed the highest furniture standard. Supreme quality guaranteed! Class-3 gas lift passed the BIFMA, SGS. Heavy-Duty Metal Base with maximum capacity 250 lbs. Office chair caster wheels Dual-Wheel Casters for desk and chair wheels. A sturdy chair with great stability. Deluxe 3D Air Mesh for your skin. ULTIMATE SITTING EXPERIENCEBreathable and resilient padded thick office seat cushion. Ventilated office chair seat cushion prevents sweating from long seating. Air circulation to keep you cool while leaning. Elastic foam with comfort chair. Armrests support your ARMS position with ergonomic stability. Extra lumbar support for your lower desk chair back support. Curve along the waistline feel like hands on waist.