Hi, I just bought a Columbia Slipstream Half Zip Windshell that is allegedly "highly breathable" according to the tags and the sales assistant. The thing is I tested it in a 45min ride on my bike and I ended up all soaked. Though, I noticed that perspiration was not condensed in the jacket since no moisture signals appeared as it used to happen with an old shell I had . So, how can I notice that a garment like this is really breathable?
Best
