Simple and Easy to Use! - When cold, mug starts black with the USA Flag silhouette lettering design - Heat up beverage before pouring into your Sunkiss Color Changing Mug - Pour your hot beverage into the mug and watch as the rest of the USA Flag slowly reveals itself! - Enjoy your hot drink with your brand new mug! Special Care Instructions: - Wash Before First Use - Hand Wash ONLY - Gently wash outside of mug with soft sponge or simply with just water and soapsuds to preserve color changing print - Avoid using tough or rough cleaning tools on outside of mug - Avoid scratching mug with sharp objects or picking at design to help maintain color changing print - Not Microwave or Dishwasher Safe! (Due to the sensitive nature of the color changing print) - Please Be Careful When Hot Product Details: - 11 Fl oz/325 ML - Ceramic Mug - BPA/Lead Free - Hot liquid needs to be a minimum temperature of 49C/120F in order for mug to change colors - Recommended temperature is around boiling point or 71C/160F for optimal color changing - From up close you may faintly see part of design underneath black ink before color change - Lettering will stay faintly visible as part of the after color changing design