Promotional Mugs, Santos Artisanal 12 oz Ceramic Coffee Mug - Microwave Safe, The Santos Ceramic Mug 12oz has a trendy gloss body and a nature-baked base. Due to natural variations in the clay used for construction, each mug is unique and one-of-a-kind. The Santos is microwave-safe so that you can enjoy your favorite reheated foods and beverages. Microwave-safe Hand-wash only Natural clay variations give each piece unique artisanal character Care guidelines included ... #SM-6355 $4.33/each.