服装透气性的英文可以说air permeability，也可以用breathability。

例句1：PTT knitted fabrics comfort properties of air permeability, moisture permeability and moisture conductivity were tested and evaluated.

对PTT针织面料的透气性、透湿性及导湿性等舒适性能进行了测试与评价。

例句2: Things to look for in lightweight clothing: synthetic material ( stay away from cotton), minimum amount of pockets and zippers, thin fabric, and breathability.

轻量化的服装应选择只要注意：合成材料(远离棉质材料)、尽可能少的口袋和拉链、更薄的面料，而且具有透气性。