✔️ Avoid Checked Bag Fees: The main selling point of the Tortuga Travel Backpack is that it is geared towards travelers looking for a single bag for their entire trip. Overall, the Tortuga Travel Backpack is a great choice for “single bag” travelers who want to avoid checked bag fees. If you’re the type of traveler who prefers to have a pocket or compartment for every item, the Topo Designs Global Travel Bag might be the backpack for you.