This tea flask is a perfect gift for any tea lover in your life. It works with all types of tea and is made from unbreakable stainless steel. It will keep your drink hot for 12 hours and each lid is completely leakproof. The tea infuser mug is made from premium stainless steel that will never rust or transfer flavors. The 18 oz tea tumbler has a stainless steel infuser with a fine mesh. The size makes this the ideal travel tea set and portable tea maker. The multiple lids also make this a versatile tea water bottle and tea travel set.