Knock Knock Prescription Nifty Note With the Prescription Nifty Note, you can tell loved ones how to heal nonphysical woes with precision, authority, and playful empathy. From Chill Pill to Vacation, the best prescriptions sometimes have nothing to do with actual medicine Modern-day etiquette for the masses Measures 4 x 5.25 inches, 50 sheets Knock Knock is an independent maker of clever gifts, books, and whatever else they can think up; their mission is to bring humor, creativity, and smarts to everyday life