“I bought the X-Large, this wetsuit top feels slightly larger than Billabong X-Large, which is perfect for me. I always have problems with the shoulders and chest being too tight, but the Oneill fits perfect. And the long zipper up the lower back is great. Hard to find zippers this long, I guess the skinny shouldered, small chest peeps don't need zippers? 2/1 mm is perfect for cold Hawaii winter mornings. Hansen's shipped fast and customer service was great.”