To determine the pack frame size, measure down the spine from the C7 vertebrae to a line horizontal with the iliac or hip crest. Use this measurement to find your pack size on the charts below.

1. Once the frame size has been determined, the aluminum stay(s) should be bent to match the contours of your back.
2. Remove the stays from their sleeve(s) on the frame sheet.
3. Carefully bend the stays to match the contours of your back from your hip to shoulder blades (it is this contour that a pack must be shaped to, not the contour of your spine).
4. For packs with dual stays, make sure both stays have the identical shape, and carefully replace the stays in their sleeves.

Arc'teryx packs are shipped with the corresponding size of shoulder straps and either a small or a medium hipbelt, depending upon the specific pack style and size selected. If the fit is not right for you, Men's and Women's shoulder harnesses and hipbelts are available and fine tuning can be accomplished in a number of ways such as adjustment of the exit angle of the hipbelt strap, the sternum strap, the forward load transfer straps, the hipbelt load straps and the load lift straps.