Bests & Worsts Reviews from Amazon

Added 01/16/16 due to all the questions about honest reviews: I paid full price for this tumbler. I did not get any discount nor was I part of any promotion. My review here is totally unsolicited and honest. I've had this tumbler for two days and already it has passed every short term test. I drink carbonated water (without ice) all day. I pour a glass that may take me two hours or more to finish. When I get near the bottom it has warmed up, and as a result of warming, gone flat. I have used this tumbler for two days with none of that. After two to three hours the water is very nearly as cold as when I poured it, and just as "sparkly". I'm sure that would be the case with soda, which I also drink a lot of. The tumbler itself is very nice looking and obviously, well made and finished. The lip is comfortable for drinking and the shape and finish make for easy, non-slip holding. It stays warm on the outside with no condensation. I am very pleased and would recommend it to anyone interested in keeping cold, carbonated beverages cold for a l-o-n-g time. I have not used it for hot beverages, but I have no doubt it would keep them hot. Update 11/12/15: I have had this tumbler for 2 weeks. I use it every day, all day, and honestly cannot believe how good it is. I haven't used it with hot beverages, but I can tell you, for cold beverages I doubt there is anything that comes close on the market. I can fill it with soda or carbonated water, and literally hours later it is nearly as cold as when I poured it. It is truly amazing. Update 12/10/15: I'm now 5 weeks in to this tumbler, and still just as thrilled with it. This update is about more though. Yesterday I received an unsolicited, very high quality plastic lid for the tumbler. It was not offered when I ordered mine, no big deal, but their sending it to me now goes a long was towards indicating what kind of company this is and the lengths they go to in order to please. Also, after using this tumbler for a month, I ordered and have received their 32 ounce Steel Water Stein. It is the same excellent piece as the tumbler. A review on it will be posted soon. Update 01/16/16: I have now had this tumbler for 2-1/2 months. I use it daily, all day. I have dropped it a few times with no ill effects. The finish is still perfect. I hate to sound like a jerk, but I honestly have not had anything as well designed or made as this thing in a long, long time. I still love it. Update 03/27/16: I have had this tumbler one week short of 5 months. It still looks exactly as it did when I took it out of the package I received it in. I have used it every single day, all day. Cold mostly, but some hot too. All I can say is this tumbler is simply amazing! Update 11/6/16: I have now had this tumbler one year and one week. I have used it all day, every day since I received it. I have not been easy with it but not "rough". I wash it every night with hot water and dish soap. It looks as good as the day I received it. It keeps drinks hot or cold just as it always had. This tumbler is just plain perfect. I'm sure it will be this nice for years to come. Thank you Healthy Human for a truly outstanding product. Update 11/2/17: This tumbler is now two years old. I continue to use it all day every day. It continues to look and perform exactly as it did on day one. I have never had anything that holds up the way this tumbler has. Kudos again to Healthy Human!!!