Offex Ergonomic Kneeling Chair with Black Mesh Back and Fabric Seat Overall Dimension: 17"W x 30"D x 35.5" - 41.5"H. Shipping Weight: 24 Lbs. Seat Size: 15.5"W X 13.5"D. Back Size: 13"W X 15"H. Seat Height: 19.5 - 27"H. Color: Black. Material: Fabric, Foam, Mesh, Steel. Made in China.