My parka-coat was way too big for me, even though it was the smallest size available when I bought it. Being army surplus I guess it has something to do with "one size fits all". Anyway it fits better after I cut away a slice almost 30cm wide from the back. Before I was able to fit in it with all my clothes on and there was still room to spare. I also put in a new and shorter zipper and replaced the buttons with velcro strips under the windflap. The value of the coat almost increased by 50%, from 20€ to 30€.