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Smart Sport Vest Designed to Keep Your Body Up to 20° Cooler than the Ambient Temperature
HyperKewl 6531 M Black Ultra Sport Evaporative Vest, Black - Medium
HyperKewl 6531 M Black Ultra Sport Evaporative Vest, Black - Medium
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Used While Hiking (Pictured in Blue) Front View of Vest (Pictured in Blue) Side View of Vest (Pictured in Blue)
HyperKewl 6531 M Black Ultra Sport Evaporative Vest, Black - Medium
Item# 59162BK
Price: Normally $46.99 
Hot Deal $44.18
Free shipping on orders over $50 - See Details


  • High visibility ideal for runners and cyclists
  • HyperKewl technology keeps body cool for hours
  • Provides temperatures up to 20° cooler
  • Cools through evaporation like the human body
  • Pull-over style vest

Essential Info

As the weather continues to get hotter and hotter more measures need to be taken in order to keep cool while doing the outdoor activities we all love to do. With an Ultra Sport Evaporative Vest from HyperKewl all it takes is 1-2 minutes of soaking in water to provide temperatures up to 15°-20° cooler for several hours. Upon submerging the vest in water the HyperKewl fabric used will absorb, store and then release water within the vest through evaporation, much like our bodies, to cool us down. Upon removing the vest from soaking, excess water should be gently squeezed out and wiped away before wearing. The Ultra Sport Evaporative Vest has a wide range of uses such as when working outdoors, exercising, sitting in the stands during a ball game or to simply escape the heat when it starts climbing up and over triple digits. The cooling effect produced by the vest combined with its high visibility design also make it ideal for use by runners and cyclists to help keep them cool and easily seen.

Size Chart
SizeChestFront Length (Back is 2” Longer)

This vest is also available in the following sizes, each sold separately:
  • Small
  • Large
  • X-Large

  • What's Included

  • 1x - Medium, Ultra Sport Evaporative Vest - Black

  • More Info

    How it Works: HyperKewl fabric absorbs and stores water when it is submerged. Water is then released within the layers of the vest through evaporation to create a chill effect similarly to the way in which our bodies cool themselves through evaporation.

    Instructions for Use: Submerge vest in water for 1-2 minutes, squeeze out excess water, wipe dry and wear.

    Washing: In order to maintain the longest life possible it is best to wash with a gentle soap and brush.

    Note: High humidity (90%+) will diminish the fabrics ability to evaporate water to provide cooling.


    ManufacturerTechNiche International
    Manufacturer Product No.6531 M Black
    Shipping DimensionsL 12in x W 16in x H 1in
    Weight0.6 lbs
    ColorBlack with silver trim
    Soak Time1-2 minutes
    Activation Time1-3 minutes
    Cooling Duration5-10 hours
    Weight After SoakingRoughly 1.5 lbs
    Best Conditions for UseWarm, dry climates


    Used While Hiking (Pictured in Blue)  Front View of Vest (Pictured in Blue)  Side View of Vest (Pictured in Blue)   
    Used While Hiking (Pictured in Blue)  Front View of Vest (Pictured in Blue)  Side View of Vest (Pictured in Blue)   


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