Sizing is accurate. I have had this jacket for just over a month and so far I have been impressed, I purchased this jacket over other rain jackets on all the positive reviews. This jacket is a combination between a wind breaker and a rain jacket. I find myself wearing it often as it is stylish, light, waterproof and warm. My only complaint is the coloring was just the opposite of the pictures. I purchased the black jacket and was surprised that is was actually more grey. Would recommend this jacket.