Osprey never ceases to amaze me. This little pack is full of innovative features, provides a stable fit and only weights in at 1 lb 10 oz. One of the first things I noticed about this bag was the direct access zip. It’s such a quick and simple way to load and secure a hydration system, and to top it off, they’ve added a magnetic clip to the bite valve to ensure it’s right where you want it. One of my favorite features ended up being the roll out tool pouch that zips into the bottom of the pack. Anybody that owns a bike knows that they break down, and it’s really nice to not have to dig through your pack to get tools. The tool pouch is even detachable, so you can just lay it next to your bike while you’re doing the repairs. The shoulder straps and hip belts are thin, and provide just enough support without making you feel sweaty. The Hydraulics 3 Liter Reservoir that came with this bag has a nice rigid back, a handle for easy filling, and a nice wide bite valve to suck down a ton of water. While it was difficult to clean, it features an antimicrobial formula to fend off mold and bacteria, and I never had an issue with performance during testing. This pack could also be compatible with other hydration systems of your choice.