When a major-player in the backpacking market like Osprey decides to make an ultralight backpack you can be sure that there’s going to go a ripple through the scene. I was lucky enough to receive a Osprey Levity 45 backpack in August 2017 for testing and have put the pack through it’s paces in the last six months. Here’s what I liked & didn’t like about the new ultralight backpack from Osprey.