【Safe Material】:This coffee building block cup is made of food-grade plastic and can withstand a high temperature of 100 degrees Celsius. However, it can’t be placed in a microwave or dishwasher. It is recommended that you wash it by hand. 【Creative DIY Cup】:The small blocks presented in each cup of this DIY building blocks coffee mug have certain differences. Everyone can create their own unique and personalized cups. 【Fun gifts for kids】:This coffee cup is colorful and can attract children's attention; and there are some small accessories in it. Children can use these small accessories to make cups of different shapes, which helps to stimulate children's creativity. 【Multi-purpose cup】:This novelty coffee cup can not only be used to drink water, beverages, tea, coffee and other beverages; it can also be used as a pen holder or to store some small things. 【Gifts for many occasions】:This cool mug is suitable for gifts for fun themed parties, as well as holiday gifts, birthday gifts or a reward for children or family and friends. I believe it will be a fun gift.