I received  the Flip and Go Stainless Mug and I love it. I did an ice test to see how long it kept drinks  cold and I was surprised  over 24 hrs  later  it was still ice cold. Hot drinks  stay hot  most of the day  than  it stays   warm the rest.  I love it locks  so  no spilling if it  turns over , but the best feature  to me  is the  handle  to carry it  or  put in on your backpack  or whatever you are carrying..   definitely getting more of these Cleans  easy also which is nice..