How to choose the right outdoor backpack

　　Features of outdoor backpacks

　　1. The materials used in the backpack have been waterproofed and are very wear-resistant.

　　2. The backpack’s straps are wide and thick, and have a belt to share the weight of the backpack.

　　3. Large backpacks have an inner or outer aluminum frame to support the bag body, while small backpacks have a hard sponge or plastic plate on the back to support the bag body.

　　4. The purpose of the backpack is often stated on the label, such as "MADE FOR ADVENTURE" (designed for adventure), "OUTDOORPRODUCTS" (special outdoor products), etc.

　　Types of outdoor sports backpacks

　　1.Mountain bag

　　Two categories: one is a large backpack with a volume between 50-80 liters； The other type has a volume of 20