Your beverage losing its temperature is a thing of the past. This tumbler was expertly crafted to keep your hot drinks hot for 6 hours, and your cold drinks chilled for over 24 hours. First what might seem like magic, is easily explained by the construction of this tumbler. Because of the tumbler being double-walled and vacuum insulated, the interior wall retains the contents’ temperature while the outer wall is exposed to the outside temperature, therefore the gap in between keeps your drink from being affected by the outside. The shatterproof, clear lid is splash proof for you to enjoy your drink on-the-go, while the 18/8 stainless steel build is durable and designed to fit in most cup holders. Hand wash recommended only.