Since there's no such thing as too much packing space, the Zdx 29" Medium Expandable Spinner gives you more, with 2.5" of zippered expansion depth and our patented Outsider handle for a flat, roomier interior. Lots of other thoughtful details include our Smartlink strap for connecting two bags, a roomy, gusseted outer pocket for a jacket and an easy-to-grab bottom handle, all designed to keep you and your stuff merrily rolling along.