Not enough freezers at your disposal or looking for a way to store dry ice? Here at Icelander you can order insulated tempex boxes, also called polystyrene boxes, which keep your ice cooled for at least 48 hours. These tempex boxes are made of polystyrene, which allows them to keep your ice at the right temperature. These boxes are the ideal tool for transporting or conserving ice and are sold in different formats: Iso T21, Iso T31, Iso T51 and Iso T91 polystyrene boxes.