The choice of Mountaineering Bag needs to consider whether the material of the bag is waterproof and wear-resistant to avoid serious damage in extreme weather. In addition,Mountaineering Bag also has the characteristics of large capacity, so that customers in outdoor sports, replenish energy, change clothes and shoes, etc. The back design of Mountaineering Bag should be made of breathable material, and the shoulder strap can be adjusted to meet the ergonomic design. Secondly, the ,Mountaineering Bag should be designed with more inner bags, so that the items can be divided reasonably. The best product has a USB charging place, so that the mobile phone and ipad can be charged outside.