The jacket is ideal for warmer days. I would like to wear especially for cycling in summer, therefore must fit underneath also not too thick sweaters. I opted for a 38, because I knew that things often Maier umdie chest be somewhat narrow. I wear otherwise 36 with a height of 1.68 and 75D. The jacket fits perfectly in 38, the sleeve length is just right. And I also like the short collar very good!