Petromax Passive Cool Box 50 liter (sand color)Being well prepared for days without electricity? The Petromax Cool Box kx50 allows you to provide for yourself during a multi day adventure. The ultra passive cooling system operates with commercially available ice, cold packs or dry ice. The double walled, void insulated kx50 keeps ice cool for up to 12 days on end without a compressor or absorber. \n \nThe inside of the kx50 has a volume of 50 L and is designed in such a way that either 70 x 330mL