Breathability standards for sports fabrics usually vary according to different sports intensities and types of outdoor activities. Here are several common breathability standards and their applicable scenarios:
Low-output activities and general outdoor use: Fabrics with a breathability of 5,000-10,000 g/㎡×24h are suitable for low-output activities and general outdoor use, but are not breathable enough for aerobic activities such as trail running or more intense hiking.
Hiking, skiing, and mountaineering: Fabrics with a breathability of 10,000-15,000 g/㎡×24h are suitable for hiking, skiing, and mountaineering.
Intense aerobic activities: Fabrics with a breathability of more than 20,000 g/㎡×24h can be used in warm climates for more intense aerobic activities such as trail running or ski mountaineering.
In addition, the breathability of the jacket is usually required to be above 3000g/m2‧24hrs, and the waterproof performance must reach above 5000mmH2O to ensure that it will not get wet in heavy rain and can support outdoor activities such as climbing and hiking.