This ergonomic office chair will bring you comfort and support in your working spaces. The back and seat are adjustable, allowing you to find the most comfortable position for sitting. The backrest can also be smoothly adjusted from 90° to an indulgent 135°, allowing you to find the perfect angle for relaxation or focused work. In addition, the linkage armrests and retractable footrest offer you arms and legs optimized comfort. Equipped with the 5-claw base and SGS gas rod, the mesh desk chair stays stable on the ground. It also moves smoothly with 5 universal wheels. FeatureAngle Lock & height adjustable levers for easy controlling Back knob for back height adjustment 90°-135° adjustable angles offer the most suitable sitting posture Breathable mesh fabric and high elasticity sponge offer you ultimate comfort Ergonomic headrest, curved seat, and linkage armrests support your head, neck, hip, and arms Retractable footrest enables you to stretch legs SGS gas rod for stable lifting and strong weight capacity 5-claw metal base ensures overall stability 5 universal wheels for hassle-free movementSpecificationColor: Black Material: Mesh Fabric, Sponge, Metal, PU Product Dimensions: 27.5" x 27" x 43"-46" (L x W x H) Size of Seat: 20.5" x 19.5" (W x D) Height of Seat: 17.5"-20.5" Thickness of Seat: 4" Outer Spacing of Armrests: 27.5" Height of Armrests: 25"-28" Size of Footrest: 14" x 8.5"m (L x W) Max Length of Footrest: 16" Max Load Capacity: 300 lbs Net Weight: 31 lbs Package includes: 1 x Mesh Office Chair 1 x User Guide