High performance gel insulated ice substitute. Non-toxic, reusable freezer block ideal for any lunch box or cooler keeps food and drinks cold without the mess of ice. Contains non-toxic Ultratherm gel for long lasting cooling. Weight: 0.5 lbs. Dimensions: 0.75 in. W x 5.25 in. H x 4.25 in. L. Color: Blue Material: Plastic Interior Dimensions: Pack of 12