What is Sublimation? Sublimation is a fun "heat transfer" technique that is used to create custom projects including: t-shirts, mugs, socks, ornaments & more personalized creations. Shop online for contactless shipping options, including free curbside pickup, free delivery over $59, or same-day delivery on select items, and take your heat press business or hobby to the next level. Want to check out our sublimation machines and supplies in person? Use our store locator to find a Michaels store near you.