Features

• Please chill the ice packs in the freezer for more than 6 hours.　It may not freeze easily the first time, so please chill it for about 24 hours.　When frozen tightly, the cooling time of the ice pack is about 3~4 hours. (The duration varies dep***ing on the environment, such as hot sun, indoor, and temperature.) If you want to *** it all day, we recomm*** changing the ice packs in the morning and afternoon!　Aluminum coating suppresses cooling temperature (prevents excessive cooling) and is designed to last a long time.