The full backpack range, from daypacks you'd use at home through to rolling rucksacks for extended trips.
The smaller packs are cut for a day out — enough for a jacket, water and a camera without becoming a load. The larger ones carry laptop sleeves and structured compartments, and several include the anti-theft build: inward-facing zips and a cut-resistant strap.
If you're specifically flying carry-on, the travel backpacks range is sized to cabin limits.