This multi-function task chair is made with Serene Soft fabric on the seat and a mesh back. It features a 27 inch nylon base with 2 inch nylon dual wheel castors for supreme comfort and a smooth roll. The chair offers a 3 paddle multi-function mechanism which allows one to adjust the seat and back to lock in any position throughout the tilt range. With an adjustable back, adjustable arms, a pneumatic gas lift for easy height adjustments, and a weight capacity of 275 lbs. this chair really is designed for anyone and everyone. Independent back angle adjustment. Seat dimensions: 20"W x 19"D. Seat tilt lock allows the seat to lock throughout the tilt range. Pneumatic gas lift seat height adjustment. Memory foam seat cushion. Overall dimensions: 37. 5"H x 27"W x 27"D. Contemporary ergonomic mesh back designed to provide exceptional back support and to prevent body heat and moisture build-up. Multi-Function Mesh Task Chair. Weight rated up to 275 pounds. Assembly Required. Back dimensions: 20. 5"W x 23"H. Ratchet back height adjustment. Manufacturer's 6-year limited warranty. 3 paddle multi-function tilting mechanism, which allows the seat and back to be independently adjusted and locked in any position. Adjustable tilt tension control. Independent seat angle adjustment. 27" nylon base. Ratchet back with active lumbar support. Height and width adjustable arms. Contemporary ergonomic mesh back designed to provide exceptional back support and to prevent body heat and moisture build-up.