Bests & Worsts Reviews from Amazon

This is either a knock off or defective. I would be concerned about purchasing. Own two. Know to hand wash only, etc. First one was bought at REI. Holds ice all day. One from Amazon can't keep ice for two hours inside the house. Didn't want to believe but after testing is the case. Defective. But was a gift and given too late for return. Very disappointed. Had to be defective.