Lost Ranger 3N1 15°

Took this on a 30-degree night and just used the outer bag, then zipped both together for a colder trip a week later. Having three configurations in one system means I stopped guessing which bag to pack. The zippers line up cleanly when you combine them, which I was worried about.

The 3-in-1 setup is genuinely useful — I used just the outer bag on a mild night and zipped both together when it dropped near freezing. The zippers didn't snag once, which is more than I can say for my old bag.

Took this on a three-night trip and the modular setup is genuinely useful — I used just the outer bag on the warmer night and zipped both together when it dropped near freezing. The two bags snap together without any fuss, which I wasn't expecting.