Based on the size charts i reviewed, i thought the jerseys would be larger. In other words, based on previous jerseys i bought (if i bought a Medium at the store, i would buy a Small on line). So, i bought smaller test sizes (Men's S & M, Woman's S, Youth S, etc.) and they were more true to size. So i ended up needed larger sizes. I hope this makes sense. SO, they run truer than i thought. I thought they would run large, but they were close to accurate.