My wonderful, wheeled, expandable, soft-sided unicycle luggage, available at your local flea market's luggage vendor for $30 or so. For this trip I had both extensions opened. Those black lines across the bag are the extension zippers, and usually I leave one of them closed, which makes the bag close to the usual maximum allowable size. However, this bag can still be measured as oversized with one extension closed, so be advised. So far I've never had to pay for oversize, probably because it just looks like regular luggage. And that was before the airlines got so strict. Today it would probably be way too expensive to fly with this bag fully extended.

My wonderful, wheeled, expandable, soft-sided unicycle luggage, available at your local flea market's luggage vendor for $30 or so. For this trip I had both extensions opened. Those black lines across the bag are the extension zippers, and usually I leave one of them closed, which makes the bag close to the usual maximum allowable size. However, this bag can still be measured as oversized with one extension closed, so be advised. So far I've never had to pay for oversize, probably because it just looks like regular luggage. And that was before the airlines got so strict. Today it would probably be way too expensive to fly with this bag fully extended.