2 wheels - runs on twin inline wheels. Grab handles - all cases come with a padded top handle.
The large, medium and US also have a side handle. Zipped front pocket - for quick access to essential smaller items. Cabin Size - the US and XS can be used as a carry on case with a large number of airlines (please check with your airline before flying). TSA Lock - each case comes with a TSA lock.
US (Small with shoulder strap).