"Esky" is the nickname for the city of Escanaba, Michigan

Escanaba, Michigan

Escanaba is a city in the U.S. state of Michigan, located in the banana belt on the state's Upper Peninsula. As of the 2000 census, the city population was 13,140, making it the third-largest city in the Upper Peninsula after Marquette and Sault Ste. Marie...

 located in the Upper Peninsula of Michigan

Michigan

Michigan is a U.S. state located in the Great Lakes Region of the United States of America. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake"....

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Esky is an Australian brand of cooler

Cooler

A cooler, cool box, portable ice chest, chilly bin , or esky most commonly is an insulated box used to keep food or drink cool. Ice cubes are most commonly placed in it to help the things inside stay cool...

s. Outdoor recreation company Coleman

Coleman Company

Coleman Company, Inc., is an American company that specializes in outdoor recreation products. Historically, Coleman is known for camping gear....

 Australia bought the Esky brand from Nylex Ltd after the Company went into administration in February 2009.
The name is a reference to the association of Eskimos with cold climates.

The "Esky" was created by Malley's, a Sydney

Sydney

Sydney is the most populous city in Australia and the state capital of New South Wales. Sydney is located on Australia's south-east coast of the Tasman Sea. As of June 2010, the greater metropolitan area had an approximate population of 4.6 million people...

 refrigeration business.