This Awesome Ceramic Mug Is Perfect to Hold Your Morning Cup of Coffee or Teas While You Look at the Gift a Loved One Gave, Cherishing the Wonderful Memories That Are Printed on the Outside! Ceramic outperforms glass. In addition to heat lost through evaporation, which depends on the mug’s shape and the surface area of the coffee exposed to the air, your coffee will cool off as the mug, itself, draws heat through conduction and loses it through convection. In both of these areas, ceramic loses heat at a slower rate than glass. They are microwave and dishwasher safe so you can safely reheat your customized mug in the microwave and also wash it in the dishwasher. AN AWESOME GIFT IDEA - A great gift idea for a great grandma, best grandma, new grandma, it would look perfect in your Grandma’s House. Makes for an awesome birthday gift, Mother’s Day gift, new grandma gift, spur of the moment gift, newlywed gift, anniversary gift, wedding gift, house warming gift. Not Sold In Stores Anywhere. Customized in and ships from the USA (Hannibal, Missouri) 11 oz volume capacity High-quality ceramic mug Microwave and dishwasher safe Measures 3.75” tall Click the ADD TO CART Button to Get Yours Now! NOTE: Please allow 7-10 days for delivery within the USA. Tracking number will be provided after shipment. P.S. We are so confident that you'll absolutely love these mugs that we offer a 30-day hassle free 100% money back guarantee! In an unlikely event that you're not happy with your purchase for any reason, simply send us an email to support@jazzyshopper.com and we'll do everything we can to make you happy, including giving you a full refund for any item(s) returned to us within 30 days!