Re-Freez-R-Brix® Cold Bricks are a flat, stackable cold pack solution measuring 4-1/2" x 4" x 3/4" and weighing 7.5 oz each. Each brick contains a food-safe, non-toxic refrigerant gel sealed in a heavy-duty plastic pouch built to withstand repeated freeze-and-reuse cycles without leaking or deforming.

Their low-profile brick shape fits efficiently alongside product inside insulated shippers, minimizing wasted void space while maintaining uniform chilled temperatures throughout transit. Common applications include pharmaceutical distribution, biologics and blood product shipping, clinical lab sample transport, meal kit fulfillment, and specialty perishable food e-commerce.

Sold in cases of 42 and parcel-friendly, these cold bricks support high-volume replenishment for fulfillment centers and clinical operations alike. The reusable formulation reduces per-shipment consumable costs compared to single-use gel packs.