NuSparc Soho Mesh-Back Task Chair delivers a comfortable seating option that offers movement, comfort and support. Heavy-duty metal frame backrest features mesh backing for breathable comfort. Seat, measuring 19.5" W x 17.75" D, features soft, fabric upholstery. Seat adjusts in height, from 17" to 20.75" , and adjusts tilt using a simple-tilt mechanism with tilt lock. 360-degree swivel cylinder lets you easily move in any direction with little effort. Heavy-duty metal base moves on 2" smooth-rolling hooded casters, and it features a durable black powder-coat finish. Seat meets CA117 Fire Retardant Standards.