This is the 17″ torso size. I only used the pack on one 2-day trip, and is in excellent condition.
This pack is awesome, it just doesn’t quite work for me as a mostly running pack. I took it to a professional gear repair shop (Rainy Pass in Seattle) and had them sew little straps above the front water bottle pockets to hold the top of water bottles (= less bouncing).
I’m in Seattle and would ship it if needed, but actual shipping costs are on you.