Just bought a black Dainese Santa Monica jacket. Stunning! Ok it's not the cheapest jacket but it's very nice. Normally it takes a few months to break a new leather jacket in but this fits and feels perfect straight away. Can't wait to see how comfortable it is in a few months. The whole chest / stomach area is perforated allowing a good breeze through. There is also perforations under the arms. Streach material in the arms also allows some air through. I bought size 50. I mention this because in the past I have always worn size 52 or 54. The fit is amazing. The leather is so soft and suple, unlike many other jackets I have owned. First impressions (I've only worn it twice so far) is that this is a very nice jacket.