Coronavirus Update: Due to increased demand, please allow up to a week for your order to ship. We cannot provide further tracking information prior to that time. For fastest service, please email your inquiries to as we are inundated with calls. Inventory is rapidly fluctuating so information on stock is not available. Thank you for your patience and understanding.
FREE SHIPPING ON ORDERS OVER $80*in continental U.S.
FREE SHIPPING ON ORDERS OVER $80*in continental U.S.
TechNiche 6665EXT Cooling Inserts with Extended Duration
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TechNiche 6665EXT Cooling Inserts with Extended Duration

  • $155.99 per Item
MSRP: $202.79 | You save
  • 23%
Free Shipping Over $80
Buy more for less:
1-3 Items $155.99 / Item
4-5 Items $152.09 / Item
6-11 Items $148.97 / Item
12-35 Items $146.63 / Item
36+ Items $145.07 / Item
Buy more for less:
1-3 Items $155.99 / each
4-5 Items $152.09 / each
6-11 Items $148.97 / each
12-35 Items $146.63 / each
36 + Items $145.07 / each
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TechNiche 6665EXT cooling inserts are made from high strength polyurethane. It's safe, effective, and comfortable. It can maintain a comfortable 58°F (14°C) for up to 4 hours.


  • Safe, effective, and comfortable
  • Use additional inserts for continuous relief
  • Maintains a comfortable 58˚F (14˚C) for up to 4 hours
  • Made from high strength polyurethane
  • Includes four (4) Phase Change Cooling Inserts per set

Recommended For:

  • Warm Weather Work
  • Construction
  • Landscaping
  • Road Work
  • Welding
  • Outdoor Recreation
  • Weight
    7 lbs
  • SKU
  • GTIN
  • Vendor part number
  • Department
    Cooling Vests
  • Brand
  • Industry
    Construction, Oil and Gas, Assembly, Warehouse
  • Feature
    Warm Weather
  • Workwear Style
    Phase Change
  • google_product_category
  • Color

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We offer free shipping on all orders over $80 within the continental USA. If your order does not qualify for free shipping, you will get a lower shipping rate if you ship to a business rather than a residential address.


Ground shipments generally ship the next business day after your purchase and arrive within three to five business days, depending on your location. We also offer 2-Day and 3-Day expedited shipping. Most of our vendors have multiple distribution centers, and we will always ship from the closest location. 


For shipments outside of the United States, please email your request to

For more information, please visit our Shipping Information page.



Customer satisfaction is our top priority and we want you to be completely satisfied with your purchase. If you want to return your purchase for any reason, please send us an RMA request (Return Merchandise Authorization). We will respond via email with an RMA number and the return shipping address. Please allow 5-7 business days to receive your RMA.

For more information, please visit our Returns & Exchanges page.