I decided that I want to order a Osprey Packs Exos 48 Backpack. I attempted to measure my back using the instructions on the Osprey web site.
I measured from the top of my Iliac crest to my C7 vertebrae. If I measured while bent forward with the ruler following my contour... 21", and if measured while standing straight up... 20". On the sizing chart both 20" and 21" indicate "M or L". The next higher measurement is "L".
I am indecisive about whether I should order a Medium or Large pack.
Any tips on your experience with selecting the correct size for this pack?
Thanks
Randy