240x195mm. Single The Flexi Freez Cool Pack is a reusable wrap-around ice pack that will keep your food and drink cool in your cool box or soft cooler. Easy to use, it can be placed in a freezer for around 2 to 4 hours before it is required, then simply wrap it around items in your cool bag or box. The pack contains food-safe non-toxic refrigerant and is reusable.