I think my son should be giving the review instead of me. He was more impressed with his universal buddy than I was, not that I wasn't impressed. We took a trip to a neighboring town the other day and carried our universal buddies with us. We stopped that morning to grab a bite and to go drinks and put the drinks in the universal buddy. Several hours later, my son grabs his drink and says "oh wow mom, my drink is still ice cold, is yours?" I told him that cold drinks stay cold for about 12 hrs, and he was impressed. He and I are well pleased with our Frost Buddies. Now I will need to order a handle for my universal buddy, which they have. I wasn't expecting to be as satisfied with my Frost Buddy as I am, but I really do like them. Will be making a list for Christmas!