We were working with Elina Breton who wears an XS Race Fit perfectly and we were wondering what it would be like if we fit her up to size Large. Elina is 5′ 4 1/2″ and 110 pounds. She could wear a small possibly but one can already see a bit of extra room in the shoulders where the fabric is supposed to stretch to the body. In the drops this would be even more pronounced. The medium fit jersey’s cuffs no longer fit her arms and it is starting to bunch up throughout her torso. The large jersey fits nowhere of course and is far too long. Hope this helps. We will try this experiment with other riders as they come drop by the studio.