TechKewl™ Phase Change Cooling Vest

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The brilliant Techkewl phase change vest range keeps you cool for long periods of time using Cool Pax technology. Unlike the Hyperkewl vests where you need to be moving to keep you cool (evaporative cooling), Techkewl keeps you cool no matter what you are doing. Includes a carry bag to keep you vest and Cool Pax cold.

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Product Description

TechNiche International utilizes high purity alkane materials to achieve targeted temperature cooling. Its Phase Change Cooling Materials (PCM) are non-toxic, non-flammable and non-combustible. In their advanced manufacturing procedures, these PCM's are sealed inside high strength polyurethane to ensure they do not leak. This personal cooling technology can be deployed in a variety of occupational, recreational and competitive settings.


  • V-neck with zipper closure
  • Hook and loop girth and shoulder adjustments
  • 100% cotton vest, with thermal liner
  • One set of 6665 Cool Pax™ inserts is included with each vest and one cooler bag
  • Total Weight (including 6665 Cool Pax™): 6 lbs/2.7 kgs
  • Colour: Blue
  • Medium/Large - Individuals Weight 45-80kgs (100-175lbs), Waist Size 36-46"
  • Large / XLarge - Individuals Weight 80-114kgs (175-250 lbs) Waist Size 40-50"
  • XXLarge - Individuals Weight 115+ kgs (250+ lbs) Waist Size 50"+
Note: All sizes are approximate
Key Benefits:
  • Specialized personal cooling solution
  • Works effectively in all temperature environments (eg. high humidity)
  • Targeted cooling for key heat zones, promotes comfort and enhances performance
  • Provides targeted cooling comfort and heat stress prevention
  • Lightweight, durable and reusable
  • Phase Change Material (PCM) releases long-lasting, temperature-specific (58˚F, 14˚C), cooling relief
  • Commonly used under hazardous material suits, military combat gear, mascot costumes and other apparel
  • Additional PCM inserts are available for extended relief
  • Can be activated in ice water, no electricity required

How it Works:

TechKewl™ products are designed to provide targeted temperature cooling using advanced Phase Change Cooling Materials. These materials are activated by exposing them to any condition below their Phase Change Temperature. This means that Cool Pax™ can be activated in freezers, fridges, ice water or any other situation where the temperature is below 58°F (14°C). This unique feature means that with the use of ice in a cooler, users can re-activate inserts by simply placing them in a cooler full of ice ... no need for electricity. Compared to water, these Phase Change Materials freeze faster, stay frozen longer and are lighter in weight. Each garment comes with a hang tag and care label that fully explain how best to use the product and care for the product.

How to Activate:

TechKewlTM Phase Change Cooling inserts are activated in ice water or the freezer. They will re-charge in any environment where the temperature is below58°F (14°C). Simply place them in ice water or the freezer for 45 mins to ensure that they are solid all the way through. Please note that Phase Change Material solidifies from the outside in, so they may look solid after 15 mins but need the full 45 mins to be solid all the way through.

Shopping with Confidence!

We appreciate that you want to shop with confidence online. And so Bad Backs wishes to confirm the importance we place on your privacy, security, our returns policy and customer service support.

Should you choose to shop in-store, visit one of our stores in Melbourne, Sydney or Perth. Click here for our store locations.


Who is Technische ?

TechNiche International started as a small, specialty apparel company with only a few products and a handful of customers. Today, the company has grown to become a technology leader in the exciting field of performance apparel. Its product offering has expanded to include gender specific styles, and the personal cooling and heating technology offerings have grown to meet the needs of its expanding customer base. Its customers now span the globe representing a large, diverse group of people who use apparel to enhance performance. Whether you are a construction worker trying to “beat the heat” down under in Australia, a motorcyclist touring through the California desert or an athlete training for the next Olympic games, its products can help you achieve your goals.


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