A revelation in hydration
I'm a weensy little 5'1" runner with a short torso. This pack is the most comfortable I've ever tried. The wide but whisper-light shoulder straps distribute the weight of the pack beautifully so it doesn't put pressure on my neck or shoulders; the body of the pack swings a little side to side, but it swings *with* your body motion, rather than sloshing against it. The pockets on the front are well designed for holding gels and lip balm and electrolytes and all the little things you need for several hours on the trail. My only issue is that the water bladder really does sag as it empties. The bulge of that bag hits my lower back and chafes after a while; the solution is to clip the bag to the top seam on the inside of the pack.