Bring all the color with our original sea turtle onesie! T-shirts & Onesies are a soft spun 100% polyester How are they printed? It's magic basically, but if you want the scientific answer... The process is called Dye Sublimation. Artwork is printed onto a sheet of high-release paper and transferred onto apparel using heat and pressure. Heat converts the solid dye particles into a gas — known as sublimation — and bonds them to the polyester fibers. Unlike screen printing, the dye is absorbed by Pre-shrunk Short Sleeve Onesie For Playtime, Casual Short Sleeve Onesie For Beach, Casual Short Sleeve Onesie For The Beach, Casual Short Sleeve Beach Onesie, Playful White Stretch Onesie, White Stretch Playful Onesie, Playful Printed Short Sleeve Bodysuit, Turtle Onesie, Turtle Homes