Features1 Wide Use: It can be fit most cups, such glass cup,stainless steel cup, Ceramic cup etc for better results, we recommend using flat bottom glass cup or stainless steel cup Placing a lid over mug will also help retain heat 2 Best gift choice: keep beverages(Coffee, tea, milk etc) warm whole day, making it a great gift for lover, dad, mom, wife, husband, grandparents and all your loved ones on Valentine's day, Thanksgiving and Christmas, and other special occasions to express your sincere care 3 Winter's Gift: This warmer is a great choice for keeps your body warm all day, great helper to creat a better life And also Popular for Birthday,Christmas,Thanksgiving Days Gift Pass your love and concern to your family members and friends Description:This mug warmer can slow down cooling velocity of hot coffee, and keep this temperature whole daywhich is neither too hot nor too cold, you can sip your coffee at any time, without waiting SpecificationsMaterial: ABS & ceramicSize: 16x12cmPower: 16WConstant temperature: 55 degreePackage Included1 x Coffee Mug Cup warmer