ThemeHouseParty ? The unique style of plastic inner steel tea / coffee / mug is double wall mug made of virgin plastic and non magnetic stainless steel with elegant look and comfortable handle. ?This mug has many advantages compare to the normal tea/coffee mugs. ? These mugs are unbreakable compare to glass or melamine mugs. Double wall mug is used for longer time heat or cold transfer ensure better heat and cold resistance elegant look is word of pride. ? Your child will be also like to drink milk,coffee and juice in this mug.this cup is 100% food grade and hygiene. ?This mug is built to keep hot or cold liquid ware for considerable amount of time. It is BPA less.it is ideal for gifting and travelling. good return gift ?This MUG is simple to clean and therefore more hygienic for kids. Dish-washer safe. ?Wash thoroughly before first use. Easy to use and clean.Back to school Product. Wash the boxes again with lukewarm water and use a mild soap solution and a sponge to clean it inside out.? "Avoid using harsh detergent and a scrub for MUG". ?They would hardly help in removing the stains.