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Woman wearing a fitted circulatory vest posed next to the CoolFlow Harvard System
Cool Flow® Cooling Vest System with Arctic Chiller used by Harvard University
Man wearing a CoolFlow Adjustable vest the vest is open to show the tubing inside
Cool Flow® Cooling Vest System with Arctic Chiller used by Harvard University
Man wearing an adjustable Cool Flow Circulatory vest in Nylon
Cool Flow® Cooling Vest System with Arctic Chiller used by Harvard University
Woman wearing a fitted style circulatory vest
Cool Flow® Cooling Vest System with Arctic Chiller used by Harvard University
A circulatory fitted and adjustable vest are shown open and closed the open shows the circulatory tubing sewn into the vest
Cool Flow® Cooling Vest System with Arctic Chiller used by Harvard University
Cooling Vest System with Arctic Chiller used by Harvard University is shown the blue cooler is hooked up to a chiller unit via tubing
Cool Flow® Cooling Vest System with Arctic Chiller used by Harvard University
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Cool Flow® Cooling Vest System with Arctic Chiller used by Harvard University


The Cool Flow® Cooling Vest System with Arctic Chiller has been used in various studies that have proven it will activate brown fat which can lead to weight loss! 


"Dr. Cypess found that filling the vest with 57°F water was ideal for activating brown fat. Repeated experiments have shown that within just five minutes of donning the vests, brown fat activity starts showing up in 95% of test subjects. These results, which Dr. Cypess published recently, have helped establish brown fat's potential as a bona fide weight-loss mechanism (p.139)."

King, George L, and Royce Flippin. "Strategy 4". The Diabetes Reset: Avoid It. Control It. Even Reverse It. A Doctor's Scientific Program , Workman Publishing, 2014, pp. 139-140.

Price: $1,395.00
Product Details

The Cool Flow® Cooling Vest System with Arctic Chiller has been used in various studies that have proven it will activate brown fat and lead to weight loss!

The Cool Flow® Cooling Vest System with Arctic Chiller keeps you cool by continuously circulating cool water throughout over 50 feet of insulated water lines sewn into the lightweight vest. No ice is required! Eliminate the need for filling, emptying and refilling the cooler with ice and water. Our 1/10 HP Arctic Chiller will provide the cooling required. The system is simply filled with water and the chiller set at the desired temperature between 40 degrees to 70 degrees Fahrenheit. The chiller will maintain the set cooling temperature +/- 2 degrees for as long as desired and will provide cooling for as long as needed.

"Dr. Cypess found that filling the vest with 57°F water was ideal for activating brown fat. Repeated experiments have shown that within just five minutes of donning the vests, brown fat activity starts showing up in 95% of test subjects. These results, which Dr. Cypess published recently, have helped establish brown fat's potential as a bona fide weight-loss mechanism (p.139)."


Due to health and hygiene regulations, all cooling systems and parts are non-returnable.

System Includes:

  • Cool Flow® Adjustable (CFA) or fitted (CFF) Cooling Vest, in any size
  • Nine (9) quart cooling reservoir with carrying handle
  • Four (4) feet of insulated cool water lines connect the cooling reservoir to the cooling vest
  • High flow, dry, quick disconnect couplings
  • Auto-drain accessory allows most of the water to be pumped from the cooling reservoir to a sink drain without lifting the cooler. Auto-drain attaches to the inside of the lid when not in use.
  • On/Off switch
  • AC/DC power adapter with grounded plug
  • Arctic Chiller Reservoir w/ Temperature Control
    • No ice is required! Eliminate the need for filling, emptying and refilling the cooler with ice and water. Our 1/10 HP Arctic Chiller will provide the cooling required. The system is simply filled with water and the chiller set at the desired temperature between 40 degrees to 70 degrees Fahrenheit. The chiller will maintain the set cooling temperature +/- 2 degrees for as long as desired and will provide cooling for as long as needed. Digital LED Temperature Display Control. Anti-Freezing system will not allow the heat exchanger to freeze.

Options Available:

Cool Flow® Adjustable Vest (CFA):

  • Over 50 feet of high flow cooling water lines are sewn into the interior of the vest for maximum effectiveness.
  • This lightweight vest weighs just 16 oz. with water in the lines.
  • The vest is a unisex design and has a clean, neat appearance. It may be worn under clothing or on top. It also may be worn under lead aprons, air filtration suits or any other gown.
  • It can be worn standing or sitting, and with the dry, quick disconnect couplings, you have the freedom to move as desired.
  • The adjustable vest includes chest and waist straps to cinch the vest to the body, which ensures a snug fit for maximum cooling and comfort
  • Color: Dark Blue
  • Your choice of material:
    • - 97% cotton, 3% spandex
    • - 100% 2 ply soft breathable, easy-clean Nylon
  • Adjustable sizes: S/M, M/L, L/XL, XL/2XL and 2XL/3XL
A picture of the adjustable vest size Chart* These vests adjust at the chest and waist independently

Cool Flow® Fitted Vest (CFF):

  • Over 50 feet of high flow cooling water lines are sewn into the interior of the vest for maximum effectiveness.
  • This lightweight vest weighs just 16 oz. with water in the lines.
  • The vest is a unisex design and has a clean, neat appearance. It may be worn under clothing or on top. It also may be worn under lead aprons, air filtration suits or any other gown.
  • It can be worn standing or sitting, and with the dry, quick disconnect couplings, you have the freedom to move as desired.
  • Constructed of a high-quality, cotton blend fabric with a small amount of stretch, which allows for a comfortable, slim fit and provides maximum cooling
  • Color: Dark Blue
  • Material: 97% cotton, 3% spandex
  • Fitted sizes: S, M, L, XL, 2XL, 3XL & 4XL
A picture of the fitted vest size Chart
Polar Products Inc. warrants that this product is free from defects in workmanship, materials and fitness for use for 12 months from initial purchase under normal use for which it was intended. Polar's obligation under this warranty is limited to the replacement or repair of any defective part(s) of this product. If you have a problem with your cooling system, please call our customer service at 1-800-763-8423 to obtain a Returned Goods Authorization Number (#RGA)

Please note: Health regulations prohibit us from accepting returns on used cooling systems.
"We have had great success with your cooling system."
- Lauren Weiner, Joslin Diabetes Center

"We like the cooling vest system so much, that we're going to order a second one!"
- Aaron Cypess, formerly Joslin Diabetes Center, currently at the National Institutes of Health

"We use this system for research and it's just brilliant! It's extremely effective and provides the cooling we need for our research. It's simply brilliant!"
- Victoria, Imperial College of London, UK

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