China Cooling Vest for Fire Fighting Fire Vest

The item detail information:
The cooling vest is a special cooling vest for fire officers and soldiers entering the fire field and training research and development.
It is used for high temperature, high humidity environment, and it can be used in high temperature for more than 4 hours, after treatment can be re-used.
Product structure:
It consists of four parts: orange flame retardant vest, cold insulation bag, cold insulation board and energy storage bag.
Technical parameters of refrigerant:
Character: Mobile viscous liquid.
Freezing point: -4 degree, body temperature 14~18 degree adjustable.
Latent heat of melting: 333KJ/KG
Phase transition temperature: 2 degree
Total weight of cooling vest: 1.5KG
Expansion rate: 8%