Choose the right volume
There are many backpacks on the market, from small backpacks to full-scale models designed on the Appalachian Trail for six months. Fortunately, the size of backpacks has become smaller and smaller over the past 20 years because the development of backpack technology is not as good as the advancement of camping equipment. Today, tents, sleeping bags, stoves and other necessities are also lighter.
Package volume refers to how much space there is inside the package, measured in liters (or cubic inches in some cases). Many large backpacks are named in liters, such as EMS LONG TRAIL 70 or The North Face Terra 35.
Which volume is best for you? It depends on the purpose of using it and what you need to carry.
Activity amount (l) 15-30 days hiking, school 30-50 days overnight (1-2 nights) 45-55 weekends (2-3 days) 55+ long-term travel (more than 3 nights)
Each capacity in the table above covers a wide range. For example, a backpack traveling overnight may require 30 to 50 liters of water. It all depends on whether you are a minimalist or a more traditional backpacker.
Simple or ultra-light backpackers will choose the lightest and most compact equipment, preferring to sacrifice what others may think is necessary, rather than carrying heavy burdens. For this backpacker, the sleeping bag may be insulated with the highest goose down, they usually leave the tent's bag and stakes at home. Moreover, I forgot to change clothes.
If you are a typical backpacker (for example, 90% of us) and need normal equipment, please choose a larger backpack. In winter, you will need a larger backpack to hold more clothes, a warm sleeping bag and a stronger tent. In addition, if you are going to take your children with you, be sure to bring some food and equipment.