Sublimation Printing is a printing technique that allows for full color, all-over apparel prints. Your artwork is printed onto a sheet of high-release paper and transferred onto your apparel using heat and pressure.
Heat converts the solid dye particles into a gas (sublimation) and bonds them to the polyester fibers. 100% polyester garments are required for optimal vibrancy. 50% polyester/50% cotton blends are good for achieving a vintage/worn effect.
This process requires white or very light colored garments, since any colored background drastically alters the imprint colors. Since sublimation will become part of the shirt, any color already on the garment will overwhelm the transferred image.