These are regular-cut tees (ie not fitted or 'fashion' cut).
We use Gildan 'Heavy Cotton' branded shirts which are a good quality, mid weight grade garment.
They are constructed from 180 gram square metre fabric.
They are pre-shrunk meaning you can wash with confidence they'll not shrink when you follow the label care instructions.
Gildan are a North American company and the shirts are cut a little larger than European brands, so please use this size guide of the average measurements of each size to help you choose your correct for you.