1.When buying backpacks, our general backpacks are 30 to 35 liter backpacks, larger ones are 40 to 45 liters, and the largest climbing bags are above 70 liters.
2. For travel, a 35 liter backpack is enough, it is a very convenient backpack.
3.For short-term camping, a medium forty-liter backpack is the most suitable. Use this backpack for about three to five days.
4.When you need to go out for an adventure, it is necessary to buy a large mountaineering bag. The mountaineering bag is generally removable, but the overall capacity is above 70 liters.