Handwritten Warm Card-Temperature Sensitive Christmas Card (Type C Christmas Stick)

https://i.imgur.com/OsQz1l4.jpg The weather is getting colder, so Christmas cards need to be kept warm too! Look at the message written by the sender through the warmth of your hands. Definitely the warmest Christmas card this Christmas! Each Christmas card comes with a color-changing sticker and an envelope. Thick feel paper card with gold pattern design. Write words and attach temperature-sensitive stickers to hide the message. Finally, the information is revealed through the temperature of your hands! The effect is reusable. There are four styles to choose from: A) Christmas tree B) Christmas deer C) Christmas Stick D) Christmas wave Instructions for use: After writing the message with the red pen of Youshen, Apply the included color-changing sticker to cover up the words. Note: The discoloration temperature of the sticker is about 32 degrees. If the ambient temperature is too high or too low, it will affect the discoloration effect. (If the outdoor temperature is too low, you can also use hand warmers/matches to reveal hidden information) Note: Different thickness or color pens may affect the masking effect of the sticker, please pay attention.