I hope this is not too foolish a query...
When an IH jacket, like the IH-526PJ, for example, is listed by other retailers their measurements are obviously quite different. I've come to rely on your measurements and feel confident from your charts. I'm far less confident with the other retailers. (Here's the foolish part --->) Can we just use your measures to understand the same product? When we're sure it's the same? The contrasting measurements (even when the methods are described as the same) are keeping me up at night.