9 x 8 x 1 1/2" Re-Freez-R-Brix™ Cold Bricks. Protects against thawing by keeping perishables chilled and at a uniform temperature for over 12 days. Formulated with food safe, non-toxic materials and sealed in a heavy-duty plastic pouch. Leak proof, reusable and economical to use. Ideal for pharmaceuticals, blood products, lab samples and bio products.