Homdox High Back Ergonomic Mesh Office Chair with Headrest & Armrest for Home Office and Conference Room (Black) (black 2) Height is adjustable from 44-1/10 inches to 48 inches. Back measures up to 20.5''(W) x 26''(H), seat measures 18.5''(L) x 19.7''(W). Material: high-density polyester made back mesh and soft foam padded mesh seat-- Enjoy breathable sitting. Meticulous Designs: scooped shape to ensure you sit centrally and gain the support from the backrest; the front edge of the seat has a waterfall front to reduce pressure on your legs; curve design for backrest according to human S pattern ergonomic theory. Feel the relief of your back, neck and shoulder when placing your head on the headrest with the pad providing the maximum support for your arms. Quality Assurance: Passed 3 M test; 1-year manufacturer guarantee. you can get it about 3 to 7 days