Q: I am a backpacker, I need what kind of backpack?

A: In general, the market day with soft-style backpack (Daypack), external frame pack (External Framed Pack), and internal frame pack (Internal FramedPack). To buy that type of package is mainly to see what you are usually enthusiastic about activities.
Generally speaking, if you just participate in the general urban travel, a single day hiking, or climbing activities in the outskirts of a single day, without tents, sleeping bag, stove or something, buy a pack a day is enough to use. Capacities ranging from 10 liters -40 liters of various brands did not differ much. These packages and students about the shoulders back, multi-function package also brings a belt. Optional shoulder strap time to pay attention to see the work, zippers best rough tooth-like YKK.
In any case, the best package to buy your used equipment go into the store again. Must be picky, inappropriate uncomfortable must not improvise. Traders are more concerned with selling the package how much money he can, but for you, this is not only a few hundred dollars so simple thing.

Q: What are advantages and disadvantages of external frame pack?

A: external frame pack has unified the world outdoor backpack. This package out there is a H-shaped metal frame, you can hang outside the photography box, furnace-like device. Outer frame package prices are not expensive, but also easier to fill backpacks. If you often go relatively flat open areas, large external frame backpack can choose to package.
External frame pack is also more obvious shortcomings. In general, external frame pack less comfortable within the frame package back up. Its suspension system depends mainly on thick shoulder strap, route the complex were more difficult to grasp when you pack a balance. If you need to participate in the cave stream through the woods hiking, skiing, climbing, best not to bring outside frame package.
In addition, the back pack to sit outside the frame of public transport is very convenient. You can not back a lot of equipment like a large crab-like, and people crowded bus bar, bus train luggage rack is not so large, air shipment is also troublesome, even if you take a taxi, not necessarily be able to be loaded to the back box .

Q: If you choose to package within the frame?

A: When you see the colorful shop equipment, a wide range of different functions
Internal frame pack, you are likely to feel at a loss.
Within the frame package now basically monopolized the market for a backpack, many manufacturers are also in this area all go. Although most began within the frame package is for climbers, skiers, hikers have been, and difficult to design, and it has been accepted by more and more and more people, so many people when they choose to buy a backpack inside the frame package.
There is also a shelf inside the package shelf, but the shelf is placed inside the package. Shelf is generally aluminum, fiber glass, or carbon fiber, this shelf can be pasted on the body and backpack. A good backpack can also be adjusted according to your body shape shelf, so pack more involved.
Selection of an internal frame pack, be sure to pick a close, only close to the reasonable distribution of weight. A really good package, not their backs, but wearing the same clothes as his body.
First, you have to decide how much to buy the package. The capacity within the general frame packages ranging from 40-120 liters. For the average traveler, a 65-75 liter package is most capable long-distance travel. If you need a long-term camping in the wild, if you are one of those diehard outdoor sports, or you like to go out often, like moving, you may need a 120 liters, the Hehe. To tell the truth, most people will not need more than 100 liters of the package. Moreover, in theory, the weight back up to each person should only be one-third of their body weight. Loaded too many things back in time when only you know how hard. So, pack lightly, CAREFUL IN THE SUMMER good children.

Q: How should carry the system to select it?

A: buy a package can not only look at the capacity and number, depends on how much you should use
Suspension system (suspension system).
Before the election package to family and friends to help you better if you use a ruler (preferably using a soft tape measure tailor) the amount of what your torso length (trunk length). The torso length refers to the seventh block from your spine (neck and shoulder junction is your most prominent piece of bone) to the parallel piece of hip bone and your children the distance between vertebrae. The torso length and your needs within the frame line, do not think you are 1 meter 8, a large one on the back of the pack, some people have short legs and body, and some people a long body short legs.
In general, if your torso length is less than 45 cm, you should buy a trumpet bag. If your torso length of 45-52 centimeters, you should select a medium bag. If your torso length of 52 centimeters or more, you should pick a large package.
Good manufacturers with large (56 centimeters above), or Special Small (40 cm or less) of the package, but also can be tailored. The major manufacturers package sizes, and even the same series of packages of different manufacturers are not the same size. You'd better be able to ask questions, or find some information, it is impossible within the frame on the amount of about length.