Keep Calm Or I Will Use My Teacher Voice 11 Ounces Coffee Mug Willcallyou 11 OZ durable coffee mug. Ships protected in its individual box, Printed on both sides with premium ink, it will not fade over the years. 100% safe for dishwasher and microwave. Safe for the whole family. Makes a very unique gift for every ocassion, party or gifts for the office,