ERGONOMIC EXECUTIVE OFFICE CHAIR: Ensures the perfect balance of ergonomic comfort, maximum support, and easy customization to offer exceptional seating for any office, at-home work desk, executive suite, dorm room, or just about anywhere TEMPUR COMFORT AND COOLING: Seat is made from durable yet ultra soft Authentic TEMPUR material topped with a cooling gel layer and upholstered in a stylish black fabric, and the chair features a breathable mesh back for a comfortable sit all day CUSTOMIZABLE COMFORT: Pneumatic seat height adjustment ensures you have a proper seat at your desk, and the adjustable tilt tension knob and lock-out feature ensure customized positionings BUILT-IN LUMBAR SUPPORT: Easily move the lumbar support up and down to create the perfect, much-needed lower back support (lumbar support height adjustment range is approximately 2") 360-DEGREE SWIVEL AND SMOOTH-ROLLING CASTERS: Five-star heavy-duty base with 360-degree swivel and dual-wheel casters that rotate easily allows for smooth mobility around the office and supports up to 275 lbs. Experience the comfort you deserve every work day with the Tempur-Pedic ProTask Executive Task Chair with Cooling Gel Layer. This swivel office chair ensures the perfect balance of ergonomic comfort, maximum support, and easy customization to offer exceptional seating for any front office, at-home work desk, executive suite, dorm room, or just about anywhere. The seat is made from durable yet ultra soft Authentic TEMPUR material and upholstered in a stylish black fabric, and the chair features a breathable mesh back for a comfortable sit all day. Packed with user-friendly features, the pneumatic seat height adjustment ensures you have a proper seat at your desk, and the adjustable tilt tension knob and lock-out feature ensure customized positionings. Plus, you can easily move the lumbar support up and down to create the perfect, much-needed lower back support (lumbar support height adjustment range is approximately 2"). The five-star heavy-duty base with 360-degree swivel and dual-wheel casters that rotate easily allows for smooth mobility around the office and supports up to 275 pounds. This Greenguard Certified ergonomic office chair measures 40.16"-43.5"H x 25.69"W x 26.56"D overall with a 19.06"-22.44"H x 19.59"W x 16.53"D seat size and 25.59"H x 19.28"W back size.