Wine 冷si enough to not straight sleeve in the freezer for 6 hours. Thickness is only 2 cm, making it perfect to put it in the freezer and on the campsite. Enough to keep chilled wine sleeve from the freezer 取出si 冷su – can be used up to 12 °C with normal temperature (about 18 °C) over the bottle and approximately 10 minutes. Also, just simply put it in 2 ~ 3 hours are perfect for cold conditions to keep you on the go.