Pour in hot water and watch the ocean get a little nippy. A beautiful day at the beach turns terrifying right before your eyes. Go on. Don't be scared. Perfect for any hot beverage: coffee, tea, hot chocolate, pumpkin spiced beverage. • 14 oz. Ceramic coffee cup with a comfortable handle. • All of our disappearing mugs come in a beautifully designed, colorful box. • Heat activated color changing mugs are microwave safe, but not dishwasher safe. Hand wash only. Don't soak.