FROS-T Athletic Cooling Shirts Keep You 10 to 20 Degrees Cooler

April 27, 2011 | By | 76 Replies More

Update 1/10/15: Per a note from a visitor, looks like Fros-T is no more.

If you’re looking for cool, lightweight daily-wear undershirts, check out my Thin Cool Undershirts article. 
For more technical cooling shirts/vest, check out my Hi-Tech Cooling Shirts article for more options.
Fros-T Athletic Cooling Shirt - Stay 10 to 20 degrees cooler

Fros-T Athletic Cooling Shirt – Stay 10 to 20 degrees cooler

I guess today is the day of high-tech devices, so let’s take a look at a newer, lightweight athletic cooling shirt line that will keep you really cool in those hot situations.

Before we get into the product specifics, one application I thought these light weight “under” shirts might be good for was the law enforcement. I’m not sure if this type of product would get sanctioned by the governing body that oversees what is approved apparel for police or firefighters, but one complaint I constantly hear from police officers is how hot and wet their undershirts get while wearing kevlar body armor.

Since there is no airflow between the undershirt and kevlar vest, any shirt they wear stays wet and uncomfortable – and it appears to be a pretty common (and solutionless) complaint .

Anyway, if there are any folks in the law enforcement out there that are either willing to comment below or possibly try one of these undershirts out and write me back with your findings, I’d love to hear from you.  Maybe I can try one out too and report back.

Company Information

FROS-T Sports, a venture/start-up based in Florida, has created a light-weight, form fitting, 4-way stretch athletic shirt and bra line that contain integrated cooling polymer discs distributed on the chest and back. When activated, the technology in the polyvinyl alcohol synthetic discs are said to keep you 10 to 20 degrees cooler than the outside temperature.

Here’s an excerpt from the company’s website:

FROS-T Sports, Inc. manufacture’s today’s Premier Advance Cooling Technology on apparel for all Athletes, Industrial workers and individuals with Heat Related symptoms i.e.; MS

The product is intended to help prevent Dehydration and Heat Exhaustion. The shirt is designed to cool the body core temperature to allow muscle support for optimum strength, endurance while maximizing mobility and comfort.

Fros-T athletic cooling shirt and bra shown inside out

Fros-T athletic cooling shirt and bra shown inside out


  1. FROS-T Sports Performance Cooling Short Sleeve Shirt ($44.95)
  2. FROS-T Sports Performance Cooling Sleeveless Shirt ($44.95)
  3. FROS-T Sports Performance Cooling Bra ($34.95)
  4. Youth versions of the Sleeve and Sleeveless Shirts are also available ($34.95)

How Does the Technology Work?

Polyvinyl Alcohol is a state-of-the-art synthetic material known for its “water loving” properties combined with an innovative design that creates an ultra-absorbent, drip-free process.  Made from a water soluble and biodegradable material, the hi-tech polymer retains water while remaining dry to the touch.  When wet, the PVA Chill Gear Material becomes about 10 to 20 degrees cooler than the existing air temperature.  This provides a cooling effect for the user.  When the material is no longer cool, usually 30 to 120 minutes, simply re-wet and the Polyvinyl Alcohol will begin to cool again.

Update (5/10/11) – Check the comments below. I did hear back from the company COO and we just might have found a shirt that will work under kevlar.

5/20/12: Click Here for a  FROS-T Company Update

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Category: News, Sweat Management

About the Author ()

Tug is the world's undershirt expert. Looking for undershirt or men's shapewear information? You'll find it here on my site - guaranteed! You can also find me on

Comments (76)

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  1. chris says:

    Will my sweat be an appropriate wetting Of the Disks?

    • Tug says:

      heya chris, this company fros-t is no longer in existence. check the links at the top of the article for more fitness or non-fitness cooling shirts.

  2. jason flaherty says:

    I would like to try one of these. I work in a vrey hot factory for bass pro is there any way imay be able to get one

    thank you

  3. cliff ulmer says:

    are the shirts available yet and if so where can i get one

  4. Jerry Kepple says:

    Spoke to Victor this morning he said LEO / Fire shirt should be available by end of June or so they are field testing now

  5. Scott says:

    Do you know if these guys are still around? Their website doesn’t work, their facebook page and twitter pages have not been updated in forever? I would like to speak with them if possible, do you have any contact info?

    • heya scott. i just had an email exchange with victor from fros-t. he said they were about 60/90 days away from offering their items. not sure why their website is no longer active.

      drop them a line at and see if you can get in touch with someone. the email i sent victor did not bounce, so i’m guessing their mail service is still active (hopefully).

      let me know if you can’t get in contact with them via that email.

  6. Sid says:

    Is this shirt available now?

  7. Brenda says:

    Victor – I read that you solved this issue for our law enforcement wearing their kevlar vests. My husband works in a Steel Mill – next to molten steel – extremely hot conditions. Not much air flow & always were protective suits, similar to firefighter’s. Would any of your products work for him?


    • hey brenda, thanks for stopping by and posting your question for victor!

      check out this fros-t update article i just posted. looks like the company will be starting production in about 30-45 days, and hopefully their new/latest line will offer cooling effects in low air-flow wearing situations, such as the one your husband is in with working at a Steel Mill.

  8. Bob says:

    I work in law enforcement and suffer every summer underneath my ballistic vest. I am seriously interested in purchasing one of these.

    • hey bob, it is my understanding that the fros-t undershirt needs airflow to be fully effective. i noticed this when i tried out my original fros-t. when i wore it under a couple layers of clothing, i didn’t experience the cooling effects as much.

      but, when i wore it in a situation where air flowed through the shirt some, the cooling effects were pretty pronounced. i’m not sure how much the fros-t technology has evolved so you may want to check with the company to see if their newer products will work in your situation.

      you might want to stay close to my site here, and subscribe to my mailing list or my rss feed. there is a company working on a technical undershirt/t-shirt product specifically designed for your use case. i can’t say much more, but once the product is ready for prime-time, i’ll be announcing it here.

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