Have a warm, timeless down vest searched and came across this one. It fits perfectly. A number would be smaller also been adequate, but was not quite as pleasant under the armpit. Since the difference of 36 to 38 was obviously not quite so serious, I decided finally to the greater because, if necessary, a slightly thicker sweatshirt would still fit under it. After wearing already several times I am still propagated still thrilled and would recommend it any time. Have they now in 3 colors.