1.Pneumatic Height Adjustment: Height locks anywhere between 28.5"-42.7" for easy sit-stand switching. 2.Lockable Silent Wheels: 4 smooth rolling casters for easy mobility; 2 lockable wheels to secure the desk in place. 3.Ergonomic Sit-Stand Design: Fits most chairs and users; movable and lockable for flexible use anywhere. 4.Sturdy & Portable: Durable, easy-to-clean desktop; H-shaped steel base supports up to 22 lbs. 5.Easy Installation: Simple setup with included instructions and video.