Absolutely LOVE this water bottle! I always saw these bottles in stores and their high price tag deterred me from purchasing. However, I received this as a gift this Christmas and I am amazed at how well it insulates! For instance, I made tea yesterday afternoon and after taking the teabags out, put the lid back on, and this morning it was still hot! Amazing! It does an incredible job at keeping drinks cold, and living in Arizona, this is very important. Love this water bottle and would recommend it to anyone based on it's high quality!