Ships ready to assemble. Adjustable seat height Adjustable ratchet back height Adjustable arm height Adjustable arm width1. Measures 25" wide x 21" deep x 47"-50" high overall. 2. Seat is 20-1/2" wide x 20"D x 18-1/2"-21-1/2" high. 3. Seat height range is 18-1/2"-21-1/2" high.1. A great economical chair for conference use or light to medium desk use. 2. Colorful fabric seat covers (optional) are sold separately below. 3. Dual wheel carpet casters standard. Soft casters for hard floors sold separately below.4. Backrest is 18-1/4"W x 27-1/2"H. 5. Space between armrests: 20-1/2"W  6. Armrest height is 26"-29"H from the floor.1. Pneumatic height adjustment. 2. Tilt with tension control and lock-out.3. Swivel 4. Adjustable lumbar strapReserve Yours Today! High-tech styling yet value priced for the conference room or general office use. Unique design consists of a taught black mesh support sleeve slid over a sturdy, formed steel rod backrest framework for a strong and attractive result. Nicely angled frame is contoured to fit the curvature of your spine. Sliding elastic back strap adjusts up and down for additional lower lumbar support. The top of the extra high backrest is foam padded and covered in an easy clean black vinyl. The seat consists of padded black mesh material over deep cushioning with a vinyl insert for an interesting design element plus easy clean up. Quality firm, high-density foam is used on seat to add to life of chair and to help prevent flattening of seat. Loop armrests are gently angled forward to not interfere with desks or tables yet are wide enough to provide a comfortable resting position. Chrome arm accents match the base and add to the impressive appearance of the high back chair. Easy assembly!Adjustable tilt tension Tilt lock Nylon base/ mesh back and fabric seat upholstery Ships ready to assemble