Well, I guess in the book they go short so the ski's are lighter. I am like 5,10 and 135 though, but I guess with a full pack a gear I d be closwer to 160-170. They also reccomend the silveretta 300 bindings in the book, because they are the lightest. Basically I am looking for the lightest combo I can get that will alow me to skin up and ski down using mountaineering boots.