Specification: Color: Black Material: Mesh, Sponge, Nylon Product Dimensions: 25" x 23.5" x 43"-47" Size of Headrest: 13" x 6" Size of Backrest: 21" x 19.5" Length of Armrests: 25" Height of Armrests: 25.5"-29.5" Size of Seat: 20" x 20" Height Range of Seat: 17.5"-21.5" Diameter of Base: 23.5" Weight Capacity: 350 lbs Net Weight: 24.5 lbs Key Features: Ergonomic Adjustable Backrest: Features a backrest adjustment range from 90° to 115° for flexible sitting positions; adjustable 1.2" lumbar support helps customize lower back comfort Multi-Adjustable Headrest And Height: Includes a 2D headrest with 4" height adjustment and 60° rotation; seat height adjusts from 17.5" to 21.5" to fit different users and desk setups Breathable Mesh Seat Design: Made with breathable mesh material for improved airflow; wide sponge-padded seat provides comfortable support during work, study, or daily tasks Flip-Up Armrests: Designed with 90° flip-up armrests for flexible use; allows the chair to be stored neatly under desks to help save space Sturdy Construction: Supports up to 350 lbs with a stable five-claw base; smooth-rolling wheels provide easy movement while helping protect floors from scratches 360° Swivel Function: Rotating seat design allows convenient movement in multiple directions; suitable for home offices, workspaces, and study areas Note: Actual product color may slightly vary from the images shown due to lighting conditions during photography and individual monitor or device display settings.