Feature:1. Wide Applications: Suitable for high temperature, high heat, and high humidity, especially suitable for cold labor protection environments. Such as metallurgy, forging, welding, glass, fire protection, petroleum, power plants, boiler factories, sandblasting, paint baking, etc.2. Outlet Temperature: Only manual knob and adjustable air outlet temperature thermometer. If the compressed air inlet pressure and temperature remain constant, the outlet temperature of the vortex tube will be maintained at 1F(0.6C) continuously.3. Filter Compressed Air for Industrial Use: Cooling vest vortex tube has no electricity, no chemical refrigerant, only industrial compressed air is filtered.4. Simple Operation: The air conditioning vest air duct is opened and closed immediately, making it easy to control and cooling without any waste.5. Safe To Use: Cooling vest vortex tube has no spark flickering hazard, no wireless and radio frequency interference.Specification:Item Type: Cooling Vest Vortex TubeMaterial: Aluminum Alloy And SiliconeCold Source: Compressed Air (Only Compressor, No Accessories Required)Weight: Approx. 528g / 18.6oz.Package List:1 x Air Duct1 x Refrigerator1 x Belt