Call attention to your sense of humor while instilling proper etiquette in your guests with our sturdy and reusable drink coasters. No matter the occasion, imbibing visitors are sure to marvel at your good taste and mind their manners. More polite than actually saying it yourself. A hosting gift that’s actually helpful to the host! 5-inch diameter; 8 coasters, 2 each of 4 designs. Knock Knock is an award-winning purveyor of witty books and gifts. Their mission is to create products that bring humor, function, organization, and design to everyday life. Putting out coasters for your guests is a great passive-aggressive way of telling them that you don’t appreciate drink rings. But if you have friends who may not respond to subtlety, you might want to consider Indelicate Doily Coasters.