1. According to the number of people
When traveling alone, you can choose a backpack of about 25-35 liters. When traveling with family and children on holiday, from the perspective of taking care of the family, you need to choose a backpack of about 40 liters, with more external systems, so that it is convenient for the family to carry umbrellas, cameras, food and other items.
2. According to gender
Due to the different body shapes and load-bearing capacities of men and women, the choice of outdoor backpacks is also different. Generally, for short-distance outings of one or two days, a unisex backpack of about 30 liters is enough. For long-distance travel or camping of more than 2 to 3 days, when choosing a backpack of 45 to 70 liters or even larger, generally men choose a backpack of about 55 liters, and women choose a backpack of 45 liters.
3. According to the itinerary
For single-day outings, cycling, and mountaineering activities, choose a backpack under 30 liters. For two to three days of camping, you can choose a multi-functional backpack of 30 to 40 liters. For more than four days of hiking, you can choose a backpack of more than 45 liters for outdoor equipment such as tents, sleeping bags, and moisture-proof pads. In addition, general field activities are different from the backpacks used when climbing mountains. The backpacks used for mountaineering are
There are not many parts, friends who like mountaineering should pay attention.
Four, according to the length
Before choosing a backpack, you first need to measure your upper body length, that is, the distance from the protrusion of the cervical spine to the last lumbar spine. If the torso length is less than 45 cm, you should buy a small bag. If the torso length is between 45-52 cm, you should choose a medium-sized bag. If your torso is longer than 52cm, you should pick a large bag.
