The design of the backpack with additional equipment in order to prevent sweating in the hot and humid season, with these accessories and creating a distance between the backpack and the body or clothes, it prevents sweating, and also with built-in holes, it causes air to circulate through the backpack. And it becomes the body. Also, this equipment can be edited and optimized, and this is a basic and perhaps attractive idea for backpack lovers in hot seasons and cities with high humidity.

link/; https://youtu.be/ldBiY4SZt2I