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).
Other Bags to Check Out:
The Headway MLC (Maximum Legal Carry-on) from Patagonia is a very functional gear bag that works better as a duffel due to it's uncomfortable (but hideable!) backpack straps.
A very functional eco-friendly bag, the Wayks One expands and compresses into multiple different functions, making it a great bag for daily and travel use.
A medium-large sized travel bag with sturdy, rigid outer material, a couple external pockets and a removable internal divider that makes for actually a pretty interesting way of accessing things in transit.
The Guide Pack from Tom Bihn is a bag geek's boner pill. It's classic design and exceedingly excellent manufacturing make it more like an heirloom than a bag. But this bag also performs great as a travel bag!
The Everyday backpack from Peak Design is delightfully innovative and thoughtfully conceived. It's definitely a design for the centuries.