Sit-to-Stand School Desk provides a roomy, adjustable workstation and lets students work from either a seated or standing position. Alternating between sitting and standing while working reduces back pain and strain and gives you a boost in overall health and energy. Desk adjusts in height from 25.5" to 41" , accommodating students from elementary school to high school. Work space holds a monitor or laptop and supports up to 20 lb. For height adjustments, Sit-to-Stand desk utilizes Gas Spring Motion Assist to ensure smooth transitions between height settings. Equipped with 2" lockable casters, students' desks can be shifted to a new location or remain stationary. Book Box (included) can support up to 10 lb. Additional features include a convenient backpack hook for extra storage. Versatile desk is perfect for both individual and group use and can be used as a work-space extender.