I recently purchased the inner piece for my Frost Buddy because I lost it a long time ago, and have been really sad about that. Love that they sell the individual pieces for a Frost Buddy. Someone sent me a TikTok ad for Frost Buddy, and it really changed my drinking game. I drink kind of slowly, so I use the insulated koozies ever since I got my hands on one. I also drink a lot of energy drinks and those can come in various sizes. When I'm having a day of drinking with friends, various types of cans and bottles are tossed around. I no longer have to carry around 2 Brutmate koozies; I just carry around my Frost Buddy. I make sure to promote them to anyone who will listen!