Cryopak - Phase 22™ PCM Gel Pack

Known in the industry to assist keeping your shipment temperature under control, these professional grade gel packs are reusable and work like magic! Pack size - 4.25 x 5.75"  Here is what Cryopak says about them: "Phase change materials (PCM) offer advanced thermal protection for temperature-sensitive products that require storage within very specific temperature ranges during shipping. For the reptile and amphibian industry, the best PCM is Phase 22. This material begins to change phases at 22°C (71.6°F) and can keep a package at room temperature for at least 24 hours. In its liquid form, it will keep shipped contents warm. In its solid form, it will protect these objects from the heat." Provides additional thermal protection when shipping products between 15-30°C (59-86°F) In liquid form, assists keeping contents warm. When in solid form, assists protecting contents from heat. When purchasing 10 or more Cryopak or Uniheat shipping packs, customers will receive an automatic 10% di