.answer li {list-style: inside;}.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%;} .embed-container iframe, .embed-container object, .embed-container embed, .embed-container video { position: absolute; top: 0; left: 0; width: 100%; height: 100%;}The Phase 22 Shipping pack provides temperature stability when shipping reptiles and amphibians. These packs are designed to automatically go through two phases, a "warm" phase and a "cool" phase dependant on the ambient temperature. Keeping your package at a steady 22C (71.6 F)! When temperatures drop below 72 F a chemical reaction turns the packs material into a liquid that provides heat, and when the temperature rises above 72 F the pack solidifies to bring down the temperature in order to protect your package. Provides thermal protection when shipping products between 15-30°C When used as liquid, keeps contents warm When used as solid, protects contents from heat It is recommended that you use a minimum of 2 packs per box when shipping live animals.Cryopak Phase 22 packs are designed to maintain a stable temperature range of 22°C (71.6°F) for temperature-sensitive items during shipping. They can be used in both warm and cold weather, but the instructions for use differ. In warm weather, the pack should be cooled down to a solid state and placed between gel and ice packs. In cold weather, the pack should be warmed to a liquid state and placed between a heat pack and the item being shipped. Detailed Instructions: Warm Weather: 1. Cool the pack: Submerge the Phase 22 pack in cold water or place it in a freezer until it becomes solid and opaque. 2. Position the pack: Place the solid Phase 22 pack between some packing paper and the item being shipped. Cold Weather: 1. Warm the pack: Soak the Phase 22 pack in warm water until it becomes liquid and clear. 2. Position the pack: Place the liquid Phase 22 pack between the heat pack and the item being shipped. General Tips: Avoid direct contact: Ensure the Phase 22 pack does not directly contact the item being shipped, especially if it's a live animal or plant. Use with other cooling/warming elements: The Phase 22 pack can be used in conjunction with ice packs, heat packs, and other insulation materials to further regulate temperature. Consider shipping delays: In regions with unpredictable weather, especially during peak shipping times (like Black Friday or Cyber Monday), it's wise to factor in extra shipping time and potentially use a heat pack that can accommodate delays. Check for leaks: While rare, some users have reported minor leaks from the seams of Phase 22 packs. To be safe, consider placing the pack inside a sturdy ziplock bag before incorporating it into the shipping container.