Temperature Sticker / Temperature Sticker

When we want to drink hot drinks, we normally test the drinks temperature with our lips or our fingers, and this might scald our skin.With this temperature detection sticker, we can know the temperature easily as it will be shown on the sticker once we stick it on our cup or bottle. Not only with numbers, the
temperature will also be shown with different color(red, orange, blue)
to remind users whether it is too hot or too cold.