Reduce lower back strain and regain your body's natural posture with this ergonomic kneeling chair with included back. Kneeling chairs sit you in a position to allow your diaphragm to move efficiently and promote better breathing and blood circulation. The frame is height adjustable to get into your preferred seat height. This chair can be used as a permanent office chair or used in conjunction with a conventional task or executive office chair. WL-3440-GG Color Black Finish Black Powder Coat Upholstery Black Mesh/Fabric Made of Fabric, Foam, Mesh, Metal, Plastic Ergonomic Design Ventilated Mesh Back Padded Black Fabric Upholstered Seat Padded Seat and Knee Rest Knee Rest Pad 12''W x 11''D x 2'' Thick Height Adjustable Frame Black Powder Coated Scissor Steel Frame Plastic Floor Glides CA117 Fire Retardant Foam Made In Taiwan TAA Compliant Capacity 200 lbs. Some Assembly Required Warranty Info 2 yr Parts Overall Dimensions 17 W x 30 D x 35.50 41.50 H Seat Dimensions 15.50 W x 13.50 D Back Dimensions 13 W x 15 H Seat Height 19.50 27 H