This tumbler is crafted from high - quality 304 stainless steel. The cup body has a shiny surface and comes with a stainless steel straw. It measures 6*7*22cm. When you pour hot water into the cup, it's normal for the steam to lift the lid, and this isn't a quality issue.

Using this cute tumbler is super easy. Just open the lid, fill it with your favorite hot or cold drink, and close the lid. The stainless - steel straw makes sipping a breeze. When it comes to cleaning, you can use mild dish soap and warm water. Rinse it thoroughly and let it dry. Remember, if you fill it with hot water, the steam might lift the lid, but don't worry, it's not a problem. Keep it away from sharp objects to avoid scratching the shiny surface.