Boss Office Products Caressoft Diamond Task Chair with Adjustable Arms, Black: * Mid-back ergonomic task chair * Contoured back and seat provides support and helps relieve back strain * Extra large seat and back cushions * Pneumatic gas lift seat height adjustment * Adjustable arms * Caressoft upholstery and nylon base construction * 6-year warranty * Dimensions: 25"L x 25"W x 40"H * Model# B9091-CS