The Science Behind a Styrofoam Cooler: How Does It Keep Items Cool? by ASC, Inc.
Therm-Box Professional Styrofoam Box, 31.0 x 25.0 x 18.5 cm, Wall: 3.0 cm, Volume: 5.93 Litres, White Insulated Thermal Box, Cool Box, Small : Amazon.co.uk: Sports & Outdoors
12 X 8 X 8" Insulated Styrofoam Shipping Cooler (60 Coolers) | Miller Supply Inc