You choose it!  Name the color of shirt and style -- all unisex. sizing.  T-shirt will be Softstyle 4.2 oz, (solid color will shrink a little, heathered colors will not),  Bleached Tee will be Softstyle Cotton/Poly no shrink blend, Long Sleeve will be unisex Gildan 50/50 no shrink tee, and Fleece Crew is GIldan 8.2 oz cotton.