What is the most suitable size for a girl who travels outdoors for 5-6 days 155cm to buy a backpack? It is urgent. . .

Are you hiking with a group or alone? Hiking by yourself is a good friend. Thirty liters is not enough, at least about 55 liters, because you bring more than that. The size of your backpack depends on your waistline. The general selection method is as follows.

If your waist circumference (around the hip bone) is less than 68 cm, choose extra large. If your waist is 68-78 cm, choose a small size.

If your waist is 78-92 cm, look up the figures. If your waist circumference is 92- 106 cm, choose a larger size.

About what equipment to bring, you can check it online again and check the special website of Lvyou. There should be more detailed information.