All waterproof products are made by high frequency welding , but the waterproof rating is different, for example, a small and simple welding waterproof phone bag, it is welded by HF welding with ABS closure, waterproof rating can reach to IPX7-IXP8. If you want to have a simple outdoor hiking trip, just need to bring some simple camping gears, will suggest to use a waterproof rolled top backpack, that the waterproof rating is IPX6 .
We can also produce different volume bags made by PVC or TPU materials, in different waterproof rating backpack to meet variety consumers’ need .