Bag manufacturers suggest that you choose to buy according to the type of backpa

Backpack, as the core equipment of backpackers, will accompany you every time you travel. Outdoor backpacks need to be able to accommodate all the equipment you need to travel, but they must not hinder your movements and also need to bring you a comfortable carrying feeling. But it can still provide a more comfortable carrying capacity. The carrying system of modern outdoor backpacks is very complicated and requires careful selection to ensure a fit. This is as important as choosing shoes. A poorly-fitting backpack will reduce your outdoor experience value. If you backpack, it will bring you bad Experience, then you may quickly lose interest in outdoor sports. So it is worth spending some time and energy to understand backpacks and choose backpacks.

According to the different volume of backpacks, The volume of small backpacks is less than 40 liters. These backpacks are generally used in cities, and they are also suitable for short outings of 1-2 days.

The volume of a medium-sized backpack is generally between 40 and 70 liters. These backpacks have a wide range of uses. For 2-4 days of field trips, travel between cities and some long-distance non-camping self-service trips, medium-sized backpacks are very suitable. The clothes you bring with you and some daily necessities can be fitted. The styles and types of medium-sized backpacks are more diverse. Some backpacks have added side pockets to make it easier to store items separately. The back structure of this type of backpack is basically the same as that of a large backpack.

The large backpack has a volume of more than 70 liters, which is suitable for long-distance travel and more professional adventure activities. For example, when you are going to a region like Yellowstone for a long-distance trip or mountain adventure, you should undoubtedly choose a large backpack with a volume of more than 70 liters. Some short- and medium-term trips also need a large backpack if you need to camp in the wild, because only it can hold the tents, sleeping bags and sleeping pads you need for camping. Large backpacks can be divided into mountaineering bags and long-distance travel backpacks according to different purposes.

Mountaineering bags are generally thin and long, so that they can pass through narrow terrain. The bag is divided into upper and lower layers, separated by a zipper sandwich in the middle, so that it is very convenient to pick and place items. The sides and top of the backpack can be tied with tents and cushions, which virtually increases the volume of the backpack. There is also an ice axe cover outside the backpack, which can be used to bundle ice axe and snow pole. The most worth mentioning is the back structure of these backpacks. The bag has a lightweight aluminum alloy inner frame that supports the body. The shape of the back is designed according to ergonomic principles. The back is wide and thick, and it also prevents the straps from going to both sides The side-slip chest strap makes backpackers feel very comfortable. Moreover, these backpacks all have a strong, wide and comfortable waist belt, the height of the strap can be adjusted. The user can easily adjust the strap to a height suitable for him according to his body. Generally speaking, the bottom of the backpack is located above the hips, so that more than half of the weight of the backpack can be transferred to the waist, thereby greatly reducing the burden on the shoulders and reducing the damage to the shoulders caused by long.

The structure of the long-distance travel backpack is similar to that of a mountaineering bag, except that the body is larger and equipped with many side pockets to sort and place the odds and ends. The front face of the long-distance travel backpack can usually be fully opened, making it very convenient to take and place items.

Travel tips：
Leading up to your hike, and again a few hours before, check the weather. This will give you valuable information on how to dress and what to pack. If the weather is forecast to be awful, it will give you the chance to change plans instead of getting surprised on the trail.