You don't want one of these packs unless you are a pack mule. They are designed to carry from 90 to 120 pounds. there is a term called "jumper knees" and it is not from jumping. It is from hauling these damn things through all sorts of terain and topogtraphy. Get a nice internal frame pack designed for casual hiking. I've got the knees. Knik(posted 8780 days ago)