I'm must say, I was skeptical of these, even after I heard guys say good things about them at the Mingo outing. I broke down and bought a 30 oz Ozark Trail tumbler from wally world today, 9 bucks. Figured it'd be a good "truck cup." It far exceeded my expectations today. I was on the road all afternoon... I put about 7 or 8 ice cubes in it and filled it up with tea at 2:40 pm. I just got home, 9:52 pm, and took my last swig of tea from it... this outstanding piece of Chinese craftsmanship still has fuggin ice in it! I'm blown away by this.

