Pressed on our white heavy cotton breathable t-shirts. Image size starts at about 10-11 inches depending on the size of the shirt. Not too excited about it being printed on this color t-shirt? No worries!! The color of the t-shirt CAN be changed. It can also be pressed to a sweatshirt, long sleeve shirt, or hoodie. Just go to the "Customized" section choose what you want your design pressed to, pick your graphic style so we create what you want. So you are aware, size price does go up after extra-large.