The M is true to size, 36ddd, and has stretch! The product description, 88% Polyester 12% Spandex, is accurate. I also have the NFL Half The Distance Dolphins Crop Top. This is a rare, feminine style. Please consider adding this style for other teams such as ATL, NO, HOU, PHI, SF, KC, etc... I wish I could make them because this season everyone was asking about this one! [late post, original purchase for both, Nov2020]