Important Info…Please Read Ready to press sublimation transfer. You must use a heat press; a household iron will not work. Sublimation works best with 100% white polyester. For t-shirts, most makers use tees made of at least 50% polyester which produces a vintage look. The lower the polyester count, the more vintage the transfer will appear. White & light grey shirts work best. Transfer will not show up on a dark shirt. Also, the printer does not print white; any white shown in the design will be the color of the shirt. Sizing Info Approximate width of design. Size may vary slightly due to the design itself. Infant ~ 4 Toddler ~ 6 Youth ~ 7.5 Adult ~ 10 Mug Sheet ~ 3.5 (2 images on each sheet for both sides of mug) 12oz Koozie Sheet ~ 4 wide x 5 Tall (2 pack - 1 for each side of Koozie) Skinny Koozie Sheet - 4 wide x 7 tall (2 pack - 1 for each side of Koozie) General Pressing Instructions Preheat shirt for 15 seconds to remove wrinkles & moisture. Press at 385-400 degrees for 50-60 seconds with light pressure. Every press is different. Experimenting & practice is needed to see what works best for you. There are many sublimation facebook groups where you can get information & asks questions. YouTube is also a good resource. Sublimation Transfer Policy By purchasing you agree that the process for application of our transfers is your responsibility & we will not refund due to user error. Please not, colors may vary slightly due to differences in screen color. Actual color will not be visible until pressed. You may use these transfers on your products for sale. The Only Bs I Need Is Baseball Season Sublimation Transfer Ready To Press