★【Leakproof Coffee Travel Mug & Keep Hot Or Cold】This travel mug leakproof is very good, so no warry leakproof when you take it in your bag/backpack or hand hold walking.The vacuum of cups and cups can block heat transfer. Our products hold liquid heat above 42 ° C for up to 6 hours and liquid cooling below 10 ° C for up to 5 hours. This is longer than other vacuum bottles. (After 24 hours at 100 ° C water, the temperature is maintained at about 40 ° C). ★【Stainless Steel Coffe Cup Safe/ Healthy/ Portable】The coffee travel mug leakproof 500 ml high performance vacuum bottle is made of 304 grade food grade stainless steel and the outer casing is made of high quality 201 stainless steel. Tough, corrosion resistant, safe and healthy. ★【Widely Use & Great Gift】Using state-of-the-art double-wall vacuum technology, this travel coffee mugs is stylish and full-bodied. Whether you are traveling, at home, in the office or outdoors - the ideal companion. Simple and practical, it is the best Birthday Christmas gift for friends, family, children, sons and daughters.