This ergonomic office chair is a wonderful addition to your study or home office. It is equipped with a S-shaped backrest with lumbar support, 8 cm seat cushion, and padded armrests for comfortable support. The backrest features a rocking mode that is adjustable from 90° to 105°, allowing you to lean back and unwind. The seat height can be adjusted from 48 cm to 58 cm. This swivel desk chair also comes with a height-adjustable and angle-adjustable headrest. The premium mesh fabric and ultra-soft sponge make you feel comfortable when you sit on the chair. In addition, the 5-claw base and 5 casters ensure outstanding sturdiness and easy movement, offering you convenience. Bullet Point: Adjustable Headrest and Lumbar Support: This mesh office chair features a headrest that is 60° angle adjustable and 4.5 cm height adjustable, providing you with customized neck and head support. The lumbar support can be adjusted up and down within 3 cm for optimized back support. Rocking Function and Height Adjustment: The rocking backrest can be adjusted from 90° to 105° for further relaxation. You can pull out the lever for unlocking and twist the control knob for adjustment. Owing to the SGS gas rod, the seat is height-adjustable from 48 cm to 58 cm to fit people of different heights. Ergonomic Chair with Flip-Up Armrests: The office chair is equipped with a S-shaped backrest, curved seat, and padded armrests to offer comfort for your back, hip, arms, and hands. Moreover, you can flip up the padded armrests for space-saving storage when not in use. Breathable Mesh Fabric and Soft Sponge: The executive chair is covered with breathable mesh fabric for a cool and dry feeling. Additionally, the high density sponge filling ensures a comfortable sitting experience, keeping you relaxed even after sitting for a long period of time. Excellent Sturdiness and Easy Movement: The 5-claw base and strong gas rod allow for overall stability. The 5 universal wheels can rotate 360° for smooth and flexible movement. Plus, the casters also protect your floor from getting scratched while moving. Features: Adjustable headrest and lumbar support perfectly support your head, neck, and waist 90° flip-up armrests provide arm support and save space Comfortable mesh fabric and sponge for ultimate comfort S-shaped backrest with ergonomic design fits your spine curve The rocking function relieves your fatigue The height-adjustable lever allows you to freely adjust the seat height(48-58 cm) SGS gas rod for stable lifting and strong load-bearing capacity 5-claw base keeps it stable Designed with 5 universal wheels for hassle-free movement Specifications: Color: Black Material: Mesh Fabric, Sponge, Nylon, PU Product Dimensions: 66 x 66 x 114-124 cm (L x W x H) Size of Headrest: 27 x 16 cm (L x H) Adjustable Angle of Headrest: 60° Adjustable Height of Headrest: 4.5 cm Size of Backrest: 52.5 x 49 cm (L x H) Adjustable Angle of Backrest: 90°-105° Adjustable Vertical Distance of Lumbar Support: 3 cm Inner Spacing of Armrests: 59 cm Length of Armrests: 25 cm Height of Armrests: 68-78 cm Size of Seat: 50 x 49 cm (W x D) Height of Seat: 48-58 cm Thickness of Seat Cushion: 8 cm Max Load Capacity: 136 kg Net Weight: 10.5 kg Package Includes: 1 x Mesh Office Chair 1 x User Guide