I bought this as gift for my boyfriend on the Christmas sale. I was very skeptical at first because there wasn’t much information on this koozie but my boyfriend has been using it for the past couple of weeks and it’s worked amazing. I was super surprised to how light weight it felt compared to my yeti koozie. His drink stays so ice cold that you can see his breath after a drink. It’s a 10 out of 10 for us and I will be ordering more. :)