Comfort for Extended Sitting: The contoured backrest follows your spine's natural curve, while the height‑adjustable, foam‑padded lumbar support lets you fine‑tune lower back comfort. Together, these elements support healthy alignment, help reduce pressure on your back, and keep you more comfortable during long work sessions. -Fits You and Your Desk: The ergonomic office chair adjusts seat height from 17.7" to 21.7" so you can better align your eyes with your monitor and your arms with your desk, adapting to different body types and preferences. The tilt function moves smoothly from an upright 90° for focused work to a relaxed 105° recline for breaks. When you need extra floor space, just flip up the armrests and slide the chair under your desk—ideal for home offices, dorms, and compact workspaces. -Specifications: -Color: Ink Black -Material: Foam, Plywood, Polyester, Steel, PA (Polyamide) Plastic, PE (Polyethylene) Plastic -Product Size: 24.4"D x 24.4"W x (35.4"-39.4"H) (62 x 62 x 90-100 cm) -Seat Height (from Floor): 17.7"-21.7" (45-55 cm) -Seat Size: 19.7" x 19.7" (50 x 50 cm) -Backrest Height: 19.7" (50 cm) -Armrest Height (from the Floor): 26"-30" (66-76 cm) -Product Weight: 23.1 lb (10.5 kg) -Max. Static Load Capacity: 331 lb (150 kg) -Package Contents: -1 x Office Chair -1 x Accessory Kit -1 x Instructions -VASAGLE Notes: -Please do not expose the swivel chair to direct sunlight for a long period of time. -Keep the mesh office chair away from sharp and pointed objects to avoid damaging the surface.