Color Changing! San Francisco Skyline ThermoH Exray Coffee Mug

Features: - Heat Sensitive Cup - The Perfect Gift! - Always Know Whether Your Drink is Hot or Cold - Perfect for Coffee, Tea, Hot Chocolate, or Your Favorite Hot Beverage - Amaze family, friends, kids, co-workers and allow them to witness "magic" right before their own eyes! - A SEATTLE BRAND - Not Microwave or Dishwasher Safe! - Due to the sensitive nature of the color changing print - 11 Fl oz/325 ML - BPA/Lead Free - Hot liquid needs to be a minimum temperature of 49°C/120°F in order for mug to change colors - Recommended temperature is boiling point 71°C/160°F 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