I use baby bottle koozies all the time.
It is very warm right now. I have a baby. When my husband and I travel, it is hard to keep her bottles cold until it is time to warm them up and feed them to her. I took some advice from a friend. I use baby bottle koozies all the time. I don’t have to worry about her formula getting warm or going bad. The koozies keep the bottles cold until I am ready to use them. Whether we are visiting a family member, friend, county fair, or amusement park, the bottles stay a perfect temperature.