Shetland Sheepdog Sheltie MERLE Property Of Adult T Shirt 100% Cotton Image is printed directly onto the shirt using state of the art printers. We do not use heat transfers so there is nothing to peel or flake off. Resolution is photo quality and far better than any screen print. Printed area is very large (12 x 12 minimum size). Highest quality heavyweight 6.1 oz. 100% cotton short sleeve.