This is a great three season riding jacket. I only say that because i ordered the white jacket and it is perforated... had i ordered the black jacket (non perf) it could be used in winter as well. It is very well put together... I would say that the jacket runs true to size. I ordered a 46 and it fits nicely with enough room to put on a long sleeve shirt underneath... I am 5'9" and weigh 195lbs. With a little extra in the middle. I cannot say enough about the build of this scorpion jacket. I would definitely buy more scorpion gear in the future.