Red Oxx Sky Train

“The [Red Oxx Sky Train](https://www.redoxx.com/products/sky-train-convertible-backpack) is a larger carry-on-sized backpack with padded, hideable straps. Like all Red Oxx bags, it is designed explicitly to be very robust. The price directly from Red Oxx is quite high, but I was able to buy one on eBay for \~ 1/3 of that. It holds a *lot* of gear, too!”