Dessert Cooler. The FlexiFreeze Dessert Cooler is the perfect travel accessory when bringing a cold dessert or casserole dish to picnics or parties. Removable, re-freezable FlexiFreeze Ice Sheets on the top and bottom of the cooler surround food with cold and keep it fresh and safe. Removable top is ideal for serving and can also be used as a separate cooling mat to keep other foods cold and fresh. Lid has Velcro pocket to hold utensils.