A Mug To Keep Designs That's What She Office Funny White Coffee Mug 11 Ounces A Mug To Keep is a registered trademark of Fred And Levine. High quality ceramic. Treat yourself or give as a gift to someone special. Safe for Microwave and dishwasher. Resistant for house and restaurant use. Large, easy-grip handle Great gift for your best friend, dad, brother, boss or boyfriend. This represents an affordable novelty they will appreciate for years. Ideal to show your love on Valentine's Day or to give a nice surprise on a birthday party.