Height adjustable track with ball-bearing hardware ensures smooth operation. Anti-microbial product protection on wrist rest inhibits the growth of microorganisms， such as bacteria， that can cause stains， odors and product degradation. Size: 16.5 inches x 25 inches x 3.2 in. Model no.: KD45. Size: 16.5inches x 25inches x 3.2 in. Color: Black.