This listing has the option to purchase either the ready to press sublimation transfer ($3.99 ea) OR the shirt ($16.99 and up) with the design already pressed onto the shirt.
 
If you purchase just the sublimation transfer, you will receive the physical image which is ready to be pressed. Printed colors may differ from on-screen colors. A Heat press is required, do not use an iron. 
 
Sublimation can be done on Light colored fabrics, with a minimum of 65% polyester. The higher the polyester count, the better the quality.