Re-Freez-R-Brix® Cold Bricks deliver over 12 days of uniform chilled temperature per freeze cycle, making them one of the longest-performing reusable cold packs available for commercial cold-chain use. Each 31 oz. brick is filled with a food-safe, non-toxic refrigerant formula sealed inside a heavy-duty plastic pouch built to endure the rigors of extended transit.

These cold bricks are well suited for pharmaceutical distribution, clinical laboratory logistics, biospecimen transport, meal kit fulfillment, and specialty food and beverage shipping — anywhere sustained refrigeration without dry ice is required. Their flat 9 x 4 x 1-1/2" profile fits efficiently alongside product inside insulated shippers, preserving usable interior space.

Each brick weighs 12.18 lbs and is fully reusable — refreeze between shipments to lower per-cycle cold-chain costs over time. Sold in cases of 6 and ships via parcel carrier.