The height of this mobile standing desk can be adjusted from 31 inches to 43 inches, and the desktop space is large, 32 inches long X16 inches wide for more work space. With four lockable rollers that move the table and hold it in place as needed, this mobile tray table is perfect for walking MATS, dining, writing, painting, computers, playing games, and more. Suitable for walking mat table, study table, sofa laptop computer table, bedroom table, snack TV tray and so on. Convenient for your daily use.