Color changing mugs have the amazing ability to turn a regular mug into a magic mug! Starting with a dark charcoal background, your image is fully revealed with the addition of any hot beverage! Our mugs are compatible with sublimation and can be used for promotional purposes, gifts, or custom items to offer and design for your business. Specifications:Brand: CALCAMaterial: CeramicCup capacity: 11ozSize: ᴓ80mm x H 95mm (3.2in x 3.7in)Color: BlackSurface: Glossy, black color-changing coating (image slightly visible under coating) Print Applications: Dye-SublimatioRemarks: Magic cup uses heat sensitive color-changing ink that changes color when hot beverages are poured into the mug. Printing image would be seen gradually when put hot water into the mug. Full cup body can change color except the handle.UsagesFor mug press Operation:Press Temperature: 180℃ (360°F) Time: 250 SecondsPressure: Medium/FirmAttach sublimation transfer paper with image printed in reverse to the mug with thermal tape Place mug in press at the press temperature, and close the element around it Press for the specified time above needed using specified pressure If the image begins to look blurry, or burnt brown by over-pressing, decrease time by 15 - 30 seconds Once done, remove the mug from the press and remove the transfer paper immediately Allow the mug to cool completely before useFor Oven Operation:Press Temperature: 400°FTime: 12 - 15 Minutes (Test in your oven for accurate time)Attach reversed printed image to mug with thermal tape Wrap silicone wrap around mug surface and clasp at handlePlace in oven preheated to 400°F for approximately 12 - 15 minutes (test to determine best timing!) Afterwards, remove wrap and transfer immediatelyAllow the mug to cool completely before use.