Integrated Respiring Cooling Vest

These Integrated Respiring Cooling Vests are available with following features :
> The Vest really makes you feel cooler in your body,it has several advantages including sound design, good cooling effectiveness, proper matching.
> Don't cause static electricity and no additional expenses.
> Non-caustic ,no-toxic,eco-friendly and reusable.
> Put the inner ice pack in the refrigerator for about 3 - 5 hours before putting on the Vest.
> Duration of cool air : 6~8 hours ( external temperature : 42 degrees