What is full waterproofing? What are the levels or categories of waterproof? Full waterproof, that is, it means that at least IPX7 or more is considered fully waterproof, that is, the waterproof level of more than 15-30 minutes immersed in water at a depth of 1 meter is considered fully waterproof. And the full waterproof down is light waterproof, that is, IPX5-6 level, instant soaking in water, raised, no water ingress. Further down is the rainproof waterproof, that is, the waterproof level of a rain cover to solve the problem, such as the rainproof level of the hiking bag, that is, the rainstorm does not enter the water for 10-15 minutes. Further down is the waterproof of life, that is, the waterproof and rainproof level.