The breathability of ULY coated fabric is achieved through the micro-porous structure. These microscopic holes allow air and water vapor to pass through the fabric, making it breathable, but effectively blocking the penetration of external liquids. In this video, we can see that the ULY coated fabric has many bubbles under the action of gas in the soaked container, which shows that it has good air permeability. This performance is very important for making backpacks, luggage, tents, raincoats and other outdoor products.