Re useable 800g freezer blocks for keeping food chilled and fresh in insulated cool boxes ideal for camping caravanning and picnicsthese coleman freezer blocks will help keep your food and drink chilled or frozen in cool boxes when out of doors made from non toxic materials they are food safe and dishwasher proof and will freeze in a couple of hours when placed in the freezer compartmentcolour swatchbluebrandcolemancolourblue