👉 The jacket fluid refers to the thin layer of water that forms around the outer surface of a garment when it is wet, typically due to the evaporation of water from the fabric's surface. This layer acts as a barrier between the wet fabric and the dry air, reducing heat loss and maintaining the garment's warmth. In jackets, this fluid is crucial for thermal insulation, as it helps to minimize the rate of heat transfer from the body to the cold environment. The thickness and effectiveness of the jacket fluid depend on factors such as the fabric's moisture-wicking properties, the speed of evaporation, and environmental conditions like humidity and wind.
