Richard M.wrote a review of Gore Wear C7 Gore-Tex Shakedry Jacket - Men's on July 1, 2018
Familiarity: I've used it once or twice and have initial impressions
At about 5'7" (170cm) and 130+/- lbs (60 kg) I ordered this jacket in medium based on the recommendation to size up. It fits well...close-fitting and no flapping but not skin tight. I might have been able to fit into the small but my arms are longer than normal for my height so medium works in that regard. If I were buying the stretch version I would try a small first and exchange if it was too tight. I also expect the medium to be more flexible in cooler weather when I've got more layers under it. I've used it only once in the rain and it performs as advertised. Visually it's a very nice-looking jacket.