Keep food cooler for longer, with this Thermobox ECO cooling holder.This cooling holder (compatible with Eco Thermoboxes) can be inserted into Thermoboxes, keeping food cooler for even longer. Simply place the cooling holder into the Thermobox for improved cooling. When the box is full it will lose on average 2°C to 3°C per hour.Thermo Future Box has created a range of robust and lightweight storage boxes that offer a solution for insulating and transporting food.