The purpose of a cold storage long coat is to provide protection for workers in freezing or refrigerated conditions. For warmth and comfort, these coats are usually composed of insulated, windproof, and waterproof materials.

A cold storage long coat's salient characteristics include:
Insulation: To retain body heat and provide protection from cold conditions, the coat is frequently lined with a thick insulating material such as down, foam, or synthetic fill.
Waterproofing: In high-humidity situations, an outer layer that is waterproof or water-resistant helps keep moisture out.
Extended Length: The coat's length, which typically reaches the knees or even the ankles, provides additional protection from the cold.
Hood and Collar: High collars and hoods, occasionally lined with fleece or fur, are typical.