The “Keep Calm and Come In” Door Mat makes sure your guests leave their emotions outside, along with all the dirt, mud and other nasty stuff on their footwear. It’s not exactly a welcome message, but it does send out a clear and unmistakable message to guests that they’re supposed to behave once they come in. The crown printed on the mat tells you it’s a riff on the British slogan “Keep Calm and Carry On” that was printed on WW II posters featuring the crown of King George VI. The mat itself is made of natural coir that’s easy to clean, and maintains a stiff upper lip no matter how hard you rub it in with wet mud and dirt.