I Teach What's Your Superpower? coffee mug. Great teacher gift idea and she will love it! - 11 or 15 oz white ceramic mug - select size from the drop down menu when ordering - Image is printed on both sides - Microwave safe - Dishwasher safe on top rack Our mugs are made using a dye sublimation process that adheres specialty inks to our mugs. The images are permanently on mugs and will not rub off, peeloff, or scratch off like vinyl or markers. Made to order. Please allow up to 2 weeks for delivery. Colors may vary as all computer monitors vary widely.