I am 175cm tall and weigh 78kg. The size M of this model is very suitable for me. I also have a size L power houdini. Both clothes are suitable for me. The power houdini fits my body perfectly without any extra space. It has a hood and is suitable as a jacket. This one is a little looser. I like to wear it as a middle layer. There is basically no problem with this one. The only problem is that only the red color of this one is discounted. I bought the red one. The color is more eye-catching and it is difficult to control when wearing it on a daily basis. I will try other cool colors when I have the opportunity in the future.