Review on RTIC Lowball Tumbler With Splash Proof Lid, 12 Oz, RTIC Ice, Insulated Travel Stainless Steel Coffee Mug, Sweat Proof, Keeps Hot & Cold Longer by Jen Coleman

I rarely review items purchased but this mug really stands out. I use this for coffee on the weekend mornings, scotch with a few cubes of ice at night, beer during the day.it just works. The cup is so well insulated I don't even need to use frozen stainless cubes in the scotch to prevent dilution, the ice never melts. The first day I filled the cup with ice at 6PM and the next morning it was half full of ice. When I came back from work it was 1/4 ice after 24 hours! The power of vacuum sealed insulation is superior to anything as it limits the rate the heat can transfer from the inside wall to the outside wall. I'm going to buy these for all my friends/family for Christmas.