This is the classic cotton t-shirt with a woman's body in mind.  The shoulders are smaller and more proportional and the waist is tapered.  The overall length is also shorter than the unisex fit.  Check out the fit diagram in the product images for exact dimensions of each shirt size.   Also see the comparision between this shirt which is the Bella Canvas 6400 tee vs the slim fit option which is the Bella Canvas 6004 fit. 

.: 100% airlume combed and ringspun cotton

.: Light fabric (4.3 oz/yd² (145 g/m²))

.: Sewn-in label