... , foundry, glass, forging, fire fighting, cooker, etc.; 2. Fit for people working outdoors, such as petroleum, traffic police, landscaping and ... driver, etc.;3. Fit for outdoor sports, training, mountain climbing, fishing, golf and other recreational activities, or for agricultural places?use. StructureCooling vest ... storage bags can be kept at 26 to 29°C for a long time;3.no need to use refrigerators ...