This PORTABLE laptop stand is perfect for professionals or anyone on the go needing a mobile, compact, lightweight (3.5 lbs), and adjustable work surface. It is the only Laptop Stand that FULLY EXTENDS for sit down and standup use. This CONVENIENT workspace sets up in just seconds and can be used anywhere from boardroom to dorm room. It FITS in most carrying cases (transport size is 10 1/2″ wide, 13″ long and 1 1/8″ thick). SELF CONTAINED DESIGN: slide bottom creates expandable surface by sliding onto table top (13″ to 23″).