sizing is a bit weird on these. not sure whether to use the specs listed for the other Osprey series. It looked like I was on the cusp b/w large and medium so I went large. It fit, but with all the straps maxed out. so i returned it for a medium. will know more in a week. too bad too, this pack is rugged and awesome and so comfortable.
maybe someone from backcountry can get on top of listing the correct sizing for the variant. Thanks!