ActiveMSers has exhaustively tested and reviewed over 20 cooling vests since our founding in 2006. The full cooling vest guide with our top recommendations can be found here: https://www.activemsers.org/cooling-vest-guide
In this thread we offer exclusive insight into our testing and bonus coverage of the vests we reviewed. Individual vests are covered in separate posts. To see if the vest you are interested in has been reviewed, we recommend you use the forum's search feature. Before we completed our subjective review (areas we evaluated are detailed below), we tested the cooling inserts for endurance and the vests themselves for safety. Some newer reviews do not have the same review detail, sorry.
ENDURANCE TESTING
Our first test established a baseline for performance expectations. The objective extreme hot weather test involved placing a fully charged cooling element (placed overnight in a 0°F freezer) from each vest—or in the case of vests without removable elements, the vest itself—on a surface preheated to 98°F (aka, stone patio table in sun). The elements were monitored until failure, noted in parentheses in the following list. Gel vests failed first, followed by ice elements and smaller phase change elements. First Line Technology’s pack and the largest of the phase change inserts failed last.
SAFETY TESTING
Our second objective test was a coldness test to gauge vest safety. In our 2011 test we found temperatures too low to recommend two of the four vests tested. The Mayo Clinic recommends icing injuries no more than 20 minutes to prevent frostbite. For a control, I filled a Ziploc bag with ice from my 0°F freezer, covered it with a T-shirt (experts also recommend a thin towel for static ice application), and measured temps below the T-shirt. Temperatures dipped as low as 36°F. I retested with a fresh batch of ice and without a T-shirt, and temps fell a full 9 degrees cooler, down to 27°F. Vests were measured similarly, and all but one of the ice-powered vests failed. The Steele ice vest plunged into the 20s, while the Polar Fashion ice vest and the FlexiFreeze ice vest dipped into the mid 30s for extended periods of time. For this reason, ActiveMSers cautions users to add an extra clothing layer for protection with these three vests.
SUBJECTIVE RANKING
Our last round of testing focused on subjective matters. Basically, how much does this Dave guy really know about cooling vests, which he’s studied for years and about which he has gotten regular input from some of the leading cooling researchers in the world (one of whom happens to be a professor in his home state). Vests were ranked in the following categories on a scale of 1-5 (5 being the highest). Note that low rankings in certain areas may not be applicable when it comes to your needs for a cooling vest. For example, if your weight tends not to fluctuate, purchasing a fitted vest with little adjustability is not much of a concern. If you only plan to wear the vest over your clothes, concealability is moot.
Design
How smartly put together is the vest? Are the cooling packs easy to insert, does the Velcro need extra attention to line up, are pockets in the right places? Are there any obvious flaws?
Fit
How well does the vest fit? Is it too baggy or too confining? Is there gapping where there shouldn’t be gapping? Does it properly hang over the shoulders? Is movement restricted?
Adjustability
How adjustable is the vest? Can the wearer adjust fitting around the chest? The waist? The shoulders? If your new diet/exercise routine is successful and you lose 15 lbs, can you adjust the vest to make it fit? Can your skinnier/fatter cousin borrow it?
Endurance
How long does the vest perform when worn as directed? If a vest is geared toward athletics, how long does the vest last taking into account the increased body heat generated by exercising?
Comfort
How comfortable is the vest to wear, sit in, lie down in, walk in? Do the cooling packs feel comfortable on your body or are they too lumpy? Does the vest accommodate plus sizes well?
Convenience
Does the entire vest or individual cold packs need to be frozen? Is the vest easy to put on, store? When your spouse buys frozen chicken from Costco, will it necessitate removing the vest or ice elements for a few days from the freezer to make room?
Concealability
Can the vest be worn under clothing, and if so, how hidden is the vest? Does the collar show? Will your friends know you are wearing one? Will people whisper “Hulk smash!” behind your back? Is it even a vest you would typically consider wearing under clothing?
Versatility
Can the vest be used in a variety of situations? Can it be worn to dinner, on the bus on the way to work, to Wednesday night softball, to an outdoor concert, to the gym? Can it handle high humidity? If cooling is depleted, can you recharge it quickly or swap out the exhausted cooling packs for fresh ones?
Portability
How easy is it to transport the vest and its cooling elements? Do the elements require freezing or just refrigeration? Do they even require precooling? Can they be recharged in ice water? Can the vest be recharged easily outside the home, or do you ideally need a sink (to charge the vest), a washing machine (to dry the vest), and then a freezer large enough to chill the vest (bigger than the hotel mini-bar)?
Quality
How is the workmanship of the vest and its cooling elements? Are quality materials used in construction? Do the seams line up, is the fabric nice? Do the cold packs leak?
Cold Sensitivity
How comfortable does the vest feel over a single T-shirt in relation to cold? Is it too cold? Is there a risk for frostbite or frostnip (score of 1). Should an extra clothing layer be worn for safety?
Dryness
Does the vest make the wearer’s clothes damp? Will condensation from melting cooling elements wet the vest? Does the vest need to be immersed in water to activate? Does frost build up on the cooling elements when frozen?
The following reviews are in no specific order. Read on!
In this thread we offer exclusive insight into our testing and bonus coverage of the vests we reviewed. Individual vests are covered in separate posts. To see if the vest you are interested in has been reviewed, we recommend you use the forum's search feature. Before we completed our subjective review (areas we evaluated are detailed below), we tested the cooling inserts for endurance and the vests themselves for safety. Some newer reviews do not have the same review detail, sorry.
ENDURANCE TESTING
Our first test established a baseline for performance expectations. The objective extreme hot weather test involved placing a fully charged cooling element (placed overnight in a 0°F freezer) from each vest—or in the case of vests without removable elements, the vest itself—on a surface preheated to 98°F (aka, stone patio table in sun). The elements were monitored until failure, noted in parentheses in the following list. Gel vests failed first, followed by ice elements and smaller phase change elements. First Line Technology’s pack and the largest of the phase change inserts failed last.
- IZI Body Cooling Vest (40 minutes)
- Polar Products Cool Comfort Hybrid Vest (50 minutes)
- Arctic Heat Ice Vest (55 minutes)
- StaCool ThermoPak (60 minutes)
- Coolture CoolPak (60 minutes)
- Maranda FlexiFreeze Panel (60 minutes)
- Steele Thermo-Strips (60 minutes)
- Polar Products Soft Ice (60 minutes)
- TechNiche CoolPax (60 minutes)
- Polar Products Cool58 400g (60 minutes)
- First Line Technology PhaseCore (65 minutes)
- Thermapparel PCM (not tested)
- Glacier Tek RPCM (80 minutes)
- Glacier Tek Flex Vest Packs (not tested)
- Polar Products Cool58 500g (85 minutes)
SAFETY TESTING
Our second objective test was a coldness test to gauge vest safety. In our 2011 test we found temperatures too low to recommend two of the four vests tested. The Mayo Clinic recommends icing injuries no more than 20 minutes to prevent frostbite. For a control, I filled a Ziploc bag with ice from my 0°F freezer, covered it with a T-shirt (experts also recommend a thin towel for static ice application), and measured temps below the T-shirt. Temperatures dipped as low as 36°F. I retested with a fresh batch of ice and without a T-shirt, and temps fell a full 9 degrees cooler, down to 27°F. Vests were measured similarly, and all but one of the ice-powered vests failed. The Steele ice vest plunged into the 20s, while the Polar Fashion ice vest and the FlexiFreeze ice vest dipped into the mid 30s for extended periods of time. For this reason, ActiveMSers cautions users to add an extra clothing layer for protection with these three vests.
SUBJECTIVE RANKING
Our last round of testing focused on subjective matters. Basically, how much does this Dave guy really know about cooling vests, which he’s studied for years and about which he has gotten regular input from some of the leading cooling researchers in the world (one of whom happens to be a professor in his home state). Vests were ranked in the following categories on a scale of 1-5 (5 being the highest). Note that low rankings in certain areas may not be applicable when it comes to your needs for a cooling vest. For example, if your weight tends not to fluctuate, purchasing a fitted vest with little adjustability is not much of a concern. If you only plan to wear the vest over your clothes, concealability is moot.
Design
How smartly put together is the vest? Are the cooling packs easy to insert, does the Velcro need extra attention to line up, are pockets in the right places? Are there any obvious flaws?
Fit
How well does the vest fit? Is it too baggy or too confining? Is there gapping where there shouldn’t be gapping? Does it properly hang over the shoulders? Is movement restricted?
Adjustability
How adjustable is the vest? Can the wearer adjust fitting around the chest? The waist? The shoulders? If your new diet/exercise routine is successful and you lose 15 lbs, can you adjust the vest to make it fit? Can your skinnier/fatter cousin borrow it?
Endurance
How long does the vest perform when worn as directed? If a vest is geared toward athletics, how long does the vest last taking into account the increased body heat generated by exercising?
Comfort
How comfortable is the vest to wear, sit in, lie down in, walk in? Do the cooling packs feel comfortable on your body or are they too lumpy? Does the vest accommodate plus sizes well?
Convenience
Does the entire vest or individual cold packs need to be frozen? Is the vest easy to put on, store? When your spouse buys frozen chicken from Costco, will it necessitate removing the vest or ice elements for a few days from the freezer to make room?
Concealability
Can the vest be worn under clothing, and if so, how hidden is the vest? Does the collar show? Will your friends know you are wearing one? Will people whisper “Hulk smash!” behind your back? Is it even a vest you would typically consider wearing under clothing?
Versatility
Can the vest be used in a variety of situations? Can it be worn to dinner, on the bus on the way to work, to Wednesday night softball, to an outdoor concert, to the gym? Can it handle high humidity? If cooling is depleted, can you recharge it quickly or swap out the exhausted cooling packs for fresh ones?
Portability
How easy is it to transport the vest and its cooling elements? Do the elements require freezing or just refrigeration? Do they even require precooling? Can they be recharged in ice water? Can the vest be recharged easily outside the home, or do you ideally need a sink (to charge the vest), a washing machine (to dry the vest), and then a freezer large enough to chill the vest (bigger than the hotel mini-bar)?
Quality
How is the workmanship of the vest and its cooling elements? Are quality materials used in construction? Do the seams line up, is the fabric nice? Do the cold packs leak?
Cold Sensitivity
How comfortable does the vest feel over a single T-shirt in relation to cold? Is it too cold? Is there a risk for frostbite or frostnip (score of 1). Should an extra clothing layer be worn for safety?
Dryness
Does the vest make the wearer’s clothes damp? Will condensation from melting cooling elements wet the vest? Does the vest need to be immersed in water to activate? Does frost build up on the cooling elements when frozen?
The following reviews are in no specific order. Read on!
Comment