Almost 90% of the world's population does not have the ability to keep food fresh or carefully to transport. About 40% of the harvest corrupts already on the way to market. Reason for this is poor transport and storage conditions. The RollCooler is based on the pot-in-pot cooling method. A pot-in-pot method,by the principle of the evaporative cooling (adiabatic cooling) work. Equipped with wide rolls, it is possible even with the container to take bumps. Grab ring for transport by hand.The additional recessed grips are for firm grip. The screw cap ensures safe closure of the contents.