NOTE : To ensure proper assembly, please follow all steps provided in the installation manual (provided in pdf below)ERGONOMIC OFFICE CHAIR - Featuring reliable ergonomic support, Articulate comes with a breathable mesh back, passive lumbar support, and generously padded and contoured 6thick mesh seat cushionRELIABLE COMFORT - Designed with productivity in mind, Articulate is perfect for everyday use. Sturdy and supportive, this executive office chair holds up to 331 lbs and comes in a variety of colorsADJUSTABLE SEATING - Articulate is a computer chair that easily adjusts to your needs with height adjustable armrests, one-touch chair height adjustment, 360 degree swivel, and a tilt and lock system. Seat : 18 - 22"HOFFICE UPDATE - Refresh your office space with this versatile choice for computer desks and workstations. Enjoy mobility over carpeted or hardwood floors with five dual-wheel castersOFFICE CHAIR MEASUREMENTS - Product Dimensions: 26.5"L x 26"W x 34 - 39"H; Armrest Height: