Gas Spring Pneumatic Lift System: Over bed desk with built-in gas spring can smoothly adjust the height with one hand, ranging from 26 inches to 41.7 inches. No need to bend down or exert force to adjust the height. With the pneumatic lift function, it can be easily adjusted with one hand. Blooming Color: White | Blooming Rolling Computer Cart w / Wheels, Laptop Table Metal in White | 26" H X 27.6" W X 15.7" D | Wayfair