Initially when I saw this mug I noticed the brand name and the handle on the mug.  This is a well known brand name and I have owned other products from this brand that keep beverages hot and cold for hours!  Another benefit is that it's stainless steal and it is portable with the handle.  My favorite feature is that you can lock the top to ensure that your hot or cold beverage does not leak out!  I would definitely recommend this mug to anyone that lives and on the go lifestyle and is looking for a product that keeps drinks hot and cold for hours!