coldkits -

Will the PlanetBox ColdKit puncture?

Although the ColdKit is designed to prevent puncturing, it is possible that it may tear with rough usage. The IcePack is filled with purified water, so it is safe if punctured by chance. There are 8 small squares on the IcePack, so if one square is punctured the other squares will remain unaffected, so you can still use the IcePack. We recommend treating the ColdKit with extra care to prevent ripping and puncturing, especially when it is not frozen.