I bought this pack for my wife, whose "lot in life" is never finding a
pack that fits. She's 5'0" with a torso length of 15". I got her the sm/med which fit comfortably in shoulders and hip (Dawn Patrol 32 is too big). The shoulder straps are 1/2" narrower than most packs, thereby not cutting into the shoulders. The hip belt has more webbing to cinch. The sm is actually 23 liters and has a nice narrow profile. Elbows have less chance of hitting the pack when using poles. If you're going light it's great, but for what my wife wants to carry it is too small. Biggest complaint is the location of the zipper for the main compartment. It's on the back panel, no access for a friend to pull something out, you need to take the pack off and the shoulder straps get in the way. The zipper has a slight curve (which makes the profile nice and narrow), but if you are overstuffing the pack, it is hard to zip up. Also, in the avy tool pocket, a 10" wide shovel blade barely fits, and everything needs to be less than 17.5" long (BD 230 probe barely fits). There is enough room for skins in this pocket.