FlatPack Plus

The zippered expansion system is genius—it goes from basically flat to a real day pack in seconds, and I've used it both as a minimal carry and for a full day out. Honestly, the versatility alone makes it worth it.

I was skeptical about how flat it could really get, but it packs down to almost nothing in my suitcase. Unzipped, it easily swallowed everything I needed for a full day of hiking plus a jacket and lunch.

The zippered expansion system is the star here—it goes from basically flat to a full day-pack size in seconds, which is perfect for travel days when I don’t want a bulky bag. I’ve used it as my only carry-on for a 3-day trip and it held everything without feeling overloaded.