Mid-Back Office Task Chair By Modern Home Zuna - Ergonomic Back Supporting Mesh Introducing the Zuna, a Modern Home exclusive design. Zuna is our first high quality mid-back office chair offered at an unbeatable price. Offered in 18 different colors, this task chair features a sleek, modern design set upon a steel base with solid caster wheels. The chair has nylon armrests and a matching foam padded and mesh back seat. Set atop the steel base, each stool comes with a Class 3 gas lift and butterfly mechanism for lifting and lowering. The overall chair measures 23.6" x 21.7" and can adjust from 36.6" overall height up to 40.6". Seat height adjusts from 18" to 22". Supports up to 250 lb user. Airy mesh backing provides the user with breathability so you can stay cool and comfortable throughout the day. Assembly required. DURABLE - Each chair comes with a 5 year manufacturer's warranty covering the mechanics of the chair. The design is perfect for office or home use. CUSHIONED - Features a soft, cushioned seat top which keeps you comfortable for a full work day. BREATHABLE - Includes a breathable mesh backrest allowing air to pass through the backrest and keep you cool. BUTTERFLY SUPPORT - Features our unique butterfly wing support which hugs your back providing perfect support while alleviating tension in the lumbar area. VARIETY - Available in 18+ colors that will match almost any home or office decor.