Rick Steves   Avanti Flight Bag,Red,One Size 100% Recycled Polyester Tough stuff: constructed with top-quality, water- and stain-resistant 100% recycled polyester, our avanti flight bag is tough enough for the most frequent flier. Pockets galore: its 1200 cubic-inch main compartment zips open extra-wide for easy access with 4 internal pockets one is removable!, 3 external pockets, and 2 external bottle pockets. Handy features: contoured, non-slip, padded shoulder strap; padded grab handle; internal o-ring to clip-in document pouch. and it is fully-lined, with a padded bottom. Just Stack It: Its Back Panel Slides And Snaps Securely Over Any Rolling Bag Handle, So You Can Stack Them And Roll Them Together.