How do I know what size s, m, or lrg. I am 5'8 and 165#?
JOSHUA B I'm 6'0 180lb and a lg was perfect for me. My pac got ripped on an expedition and they couldn't fix it, sent me a gift cert. for $300 instead. I loved the pack and if you can get the older version with the carnbon fiber frame do it! Happy trails...
ANTHONY T Measure your torso, is you are not how check online there are lots of references. Once you have your length compare the size chart.
PATRICK M I would go with the smaller size. I am 6'3" and went with the larger size and it fits perfectly. At 5'8" i would definetely go with the smaller size, but it is always best to go to a retaer that has it in stick to check the fit, then order it up thru sunnysports to save money.
Jessica S The size is based on the torso length. Small will fit a torso length of 15"-18", Medium will fit torso 17"-20", Large will fit torso 19"-22".