Approximately how much weight will climbers carry?
You will need a medium sized backpack (say 2500 to 3500 cubic inches) that can hold your layers of clothing for changing temperatures and activity levels through the day. One thing that many people do not expect is the porters who carry your large bags will probably move slower that you do. It is not uncommon to get to camp as the afternoon and evening temperatures cool off, ahead of the porters, but with lots of photographs to be taken and relaxing to be done. You need to be prepared to be inactive through part of each day as well as to hike. Most people carry packs that weigh about 20 pounds. You could pare this down to perhaps 15 if you were careful, but with a lot of camera equipment, or other personal preference type items, it might be more.
