Global Tye Black Fabric High-Back Tilter Chair, contemporary mesh backing with upholstered panels for style and comfort. This chair lets you stay cool the airy material in the back won't keep the heat in. Height-adjustable "T"-arms feature curved arm caps with tough urethane coating. 1-touch seat-height adjustment for proper posture. Pneumatic height adjustment feature lets you raise and lower the seat to the optimum height, so your knees are in the most comfortable position relative to the floor.