Cabin size and lightweight (2.5kg), which is significant when weight is limited. Easy to handle (2 roulettes- I do not like the 4 wheels). top and side handles + telescopic handle. Inside zip, which is accessible from the front, maintains strap. Front pocket size 'review' and folders. Lockout cable, code and common to all closures, TSA compliant. For robustness will be seen for the use ... it will be for the 5th star.
