Lifts the laptop screen to eye level to encourage upright posture during long work sessions. 7 height settings for precise positioning between 614 inches of lift. Portable form factor for quick setup in coffee shops airports or hotel rooms; Very stable. Compatible with laptops up to 18 inches including the 16-inch MacBook Pro; non-slip insets help keep the laptop in place. Durable engineered-polymer frame with metal fasteners; includes carrying sleeve.