Our jersey sizing is unique in that it is graded differently for every size. What this means is that we design each element of the jersey for every size. So every jersey will have slightly different measurements depending on the model and its intended fit. However, our jersey models are intended to fit the same in each size. That does vary though, given different fabrics have a different feel and elasticity, so the measurements aren't the same for each jersey we make. We highly recommend following our sizing chart or shopping at one of our retailers to find your preferred size and fit.