4 1/2 x 2 x 1 1/2 Re-Freez-R-Brix Cold Bricks 48/Case

These cold bricks are leak-proof, reusable, and cost-effective. They're made from food-safe, non-toxic materials that stay colder than ice. Tests prove they're the coldest and best gel refrigerant you can get.

Using these cold bricks is easy. Just put them in the freezer until they're completely frozen. Then, place them in your cooler, lunch box, or wherever you need to keep things cold. Remember to handle them gently to avoid any damage. When they start to warm up, simply put them back in the freezer to reuse. Keep them clean by wiping them with a damp cloth. Avoid exposing them to sharp objects or extreme heat, as this can affect their performance.