Non breathable, rather sauna jacket. I have complained about the - A. I would have chosen the entry-level model (but was described as "extremely breathable"). There was no satisfactory answer to the actual criticism, only evidence which materials would be better. The service provided by Vaude is not very customer friendly, but may be that's the number of complaints so high that Vaude customer orientation can not afford. I never buy another product from Vaude. Since products from discounters are better and cheaper.