We put the same amount of ice and the same amount of H2o in our yeti 30oz and a knockoff from the big box store and sat them both out side by side in the Florida heat and overnight the zest day the yeti had ice and cold water the other had like warm water and we became instantly convinced that the yeti is the real thing when it comes to keeping your drink cold
This review was written in the old system and had content requirements that are different than reviews written today.