I used my to go buddy to bring my frostee home from Wendy’s. Once home, I placed my lemonade in there around 8:15pm. The next day at 1:15pm I went to grab my buddy for a new drink and it still had most of the ice in it. I decided to leave that cup in there to see how long it lasted. 25 hours after originally putting it in the to go buddy, there was one cube of ice left. Taking a road trip next weekend and very excited to bring it with me.