strengthen porcelain, 430 stainless steel. The sleek cups are sure to create a dining experience your guests wont soon forget. These cups are in the right size and thickness to keep the coffee warm. If youre looking for a good basic cup like the kind youd get in a nice cafe, you have come to the right place! Perfect gift choice for Thanksgiving, Christmas, New Year, Valentines Day, Birthday, Fathers Day, Mothers Day, Teachers Day and so on. Is there anything more satisfying than that first sip of coffee in the morning?Theres no question that coffee is energizing and unbelievably delicious. Sipping piping hot caffeine as soon as possible prepares us for the day. This mug cups will give you a perfect coffee time.