衣服新的時候，水珠可以在上麵滾的，就透氣還好。但是那層DWR磨損後，麵料吸水了，透氣就差。

“The outer layer of Gore-Tex fabric is coated on the outside with a Durable Water Repellent (DWR) treatment. The DWR prevents the main outer layer from becoming wet, which would reduce the breathability of the whole fabric. However, the DWR is not responsible for the jacket being waterproof. Without the DWR, the outer layer would become soaked, there would be no breathability, and the wearer's sweat being produced on the inside would fail to evaporate, leading to dampness there. This might give the appearance that the fabric is leaking when it is not. ”

https://en.wikipedia.org/wiki/Gore-Tex