What kind of luggage is better for traveling in summer?

Capacity is an important factor in choosing a backpack: the capacity is not enough, and hanging things outside is cumbersome and easy to lose; If the capacity is too large, the backpack will not be strong when packing, and the equipment in the bag will affect the balance when moving.

Therefore, the selection of backpack capacity must first establish a personal equipment list.

Here are some suggestions for your reference:

1. You can use 20-30 liters of small backpack when going back and forth or climbing mountains on the same day;

2. For outdoor activities that need to stay overnight, mountain climbing and upstream activities within 3 or 4 days, and mountain activities within 3 days, you can use a 40-45 liter backpack;

3.3 days of mountain activities and more than 4 days of mountaineering activities in the upper reaches of streams should use 50-80 liters of backpacks.

Some equipment such as raincoats, warm clothes, sleeping bags, etc. During the climbing process, it is an object that does not decrease with time, and its size and weight are relatively stable.

Food and fuel are consumables, which decrease with the increase of activity time. The number of these items has a great influence on the capacity of the backpack.

At present, some backpacks are designed with "elastic capacity". Even after a few days of activities, the backpack can still be played steadily, suitable for different activities.

Generally speaking, small and medium-sized backpacks don't need such a design for their application occasions and backpack structures, and no one has designed them like this. If you want to change the capacity of small and medium-sized backpacks, you can adjust it by installing side bags or adjusting compression side belts.