I am usually a medium size but decided to get large because of the advertised dimensions. Although the vest was what I expected (slightly baggy), the long johns seem to be on the small side with the crotch a couple of inches below where it should be. Also, the fly gapes so it's a good job I wear these with other underwear. Now I have discovered two holes in the crotch - one is wear and the other is where a seam has pulled apart. On the plus side, they keep me warm otherwise the star rating would be lower.