GEL BLOX Cooler and Shipping Pack is a non toxic water-based gel refrigerant shipping pack specifically designed and engineered for COLD transport and storage of perishable items and shipping heat sensitive products. Designed as a safer alternative to dry ice, GEL BLOX Cold Shipping Packs are great for coolers & lunch boxes and ideal for cold transport of various foods, pharmaceuticals, vaccines, blood samples, medicines, chocolates, meats and other perishable items. Also great for coolers, picnics and any outdoor events.