TechKewlPhase Change Cooling Replacement Packs - For Large/X-Large jacket

Phase Change Cooling Inserts provide 2-3 hours of targeted active cooling regardless of the environment or breed. Includes the specific size set of TechKewl phase change cooling packs. Packs are NOT water but are instead Phase Change material and are easily re-activated in any 58' or colder environment. Phase Change material is non toxic, is lighter than water and provided cooling without ice burns, shivering or condensation.