HIGHEST QUALITY STAINLESS STEEL CUP Made from premium food-grade stainless steel cup, the wine tumbler is BPA free, lead free and rustproof. And it’s unbreakable, durable and without metal flavor. Advanced polish technique makes the inner wall of the mug much smoother and easier to clean OUBLE WALL & INSULATED COFFEE TUMBLER Double-walled vacuum insulated stainless steel coffee mug body ensures that it has the perfect performance to keep the temperature.It also prevents heat transfer to the outer wall of the cup to burn your hand.The tight-fit sealed lid can help maintain your drinks at the right temperature for hours, much longer than typical ceramic ones. Great retention performace keeps your cold drinks or hot drinks keep up to 6 hours. SLIDING LID DESIGN & EASY TO CLEAN Each tumbler comes with a sliding lid,which is strong and durable,Wide mouth design could allows quick cleaning and quick filling and you can put your put you ice cubes, drink,coffeeinto the water bottle to keep cold or hot.Our stainless steel tumblers are perfect for daily use,you can be taken to anywhere - hiking, beach, camping, gym, school or company! EASY TO CARRY Our coffee travel mugs are easy to carry for daily use .The tight clip seal on the flip lid helps prevent splashing and spilling, You can put it in your car and backpack without fear of leakage.But it's not available for Microwave.