The Federate Adapt from Kathmandu converts between three separate modes: a 28L daily carry bag, a 38L carry-on travel bag, and a 50L check-in bag.
- Extreme conversion… from daily carry to carry on bag to 50L check in bag. This thing has tons of room.
- Very comfortable back panel… very breathable and cushy. Also nice to have hip-straps built in with the ability to hide them away.
- Very limited external access… this is my big gripe with this bag (but it does the other stuff so good that this bag is a real option for lots of folks).