Below is the approximate sizing info for our T-Shirts that we sell. Our T-Shirts are a Unisex Fit & True to Size. Our top choice is always Bella + Canvas, we also use Next Level from time to time, but we will always list in the product description.
Tultex Size Chart: Tultex runs a smidge bigger than Bella + Canvas. If you are in between sizes in Bella you could size down; if you prefer a loose fit, you can order the same size. (Personally, I order the same size in Bella + Canvas and Tultex Tees.)