I use this for my day bag in a variety of applications (hiking, trail running, air travel, etc.), and it’s excellent for these purposes. The pack is minimalist (which to me is a positive) with a slightly padded waist belt and shoulder straps and a comfortable but minimal back panel. The pocket arrangement is typical of a small zip-top pack, the side mesh pockets easily hold my 27 oz water bottles, and the single waist belt pocket (yes, there’s only one – a minor gripe) is large enough to be functional and accessible. The pack carries well and holds the load close to my back. All in all, I’m very pleased with this pack and highly recommend it. The Mammut Speed 20 has relegated my Osprey Talon 22 to the closet (and perhaps soon the donation bin).
If you want a fully featured whiz-bang pack with a trampoline suspension, extensively padded shoulder straps and waist belt, Nalgene-size side pockets, and the weight that goes along with these features you should look elsewhere. But if a minimalist, lightweight pack which fits comfortably and functions well is what you need, look no further.