I really liked it and it kept me cooler
922756
I really liked it and it kept me cooler.  If you have slightly thicker thighs, they might ride up like on my.  If it wasn't for my build, I probably would rate these a 5.
4445516
This shirt helped to keep me warm this past weekend at an outdoor soccer tournament in 30 degree weather. Actually, it was very windy, so I would guess the temp was more in the low 20's.
I was actually sweating a little bit with this shirt on and a t-shirt over top with a hoodie.
Granted, this top did nothing to stop the strong winds (I wasn't expecting it to), but when all was calm, I stayed nice and toasty! :)

The fit is really good and it only shrunk a tad after washing. It;s definitely a top quality thermal and I'll be ordering more in different colors!
3335151
I wore this shirt day and night for 8 days while backpacking in Yosemite. It kept me cool, it's slight stretch allowed it to move with me, and it offered a fair amount of sun protection. And very little "stink" even after wearing it for that long.
1399341
As the other reviewers noted, this vest does not stay cool for long -- and it's certainly not self-cooling.  But for the hour or so it did stay cool after I put it on, it really did feel good.  I live in a climate with hot summers, and this vest makes it comfortable to walk for an hour or so even in the middle of the day.  Having said that, it is overpriced for an item that only keeps you cool for an hour or so.
1531586
I purchased this for a Grand Canyon crossing in May. Temps soar to the high 90s/low 100s at the bottom around this time of the year. It kept me cool (wore it around my neck and dipped in the river or other water sources when I could). What I liked:  this stayed cold for a long while. For the first part of the trip, I had this in a ziploc with ice cubes and it was freezing when they melted and I took it out to use. This is also remains soft when it dries. I purchase 2 other cooling towels. One from Costco and one from walgreens and both dried stiff.  I couldn't fold them up and store them once dried. This remains soft and pliable. It is also quite thick, but doesn't take up a lot of room. I highly recommend for hot temps, yard work, hikes, etc.
3681849
Great for extra cooling. I bought an extra for fun.
3624730
I bought this specifically for the cooling effect.  I bought a new memory foam mattress and it gets HOT.  I kept waking up sweating.  Since I put this on the bed I have not woken up from being hot.  Its a bit big.  It would fit/look better if it was a bit smaller.  It does allow for a much higher mattress to be used with it.  Mine just happens to be fairly low.  Overall, I'd say it was totally worth it for the breath-ability it gives to the memory foam.

update:  Uping the rating on this thing to 5 stars. After using this now for the summer I can say this thing does in fact keep the memory foam mattress much cooler then without it.
2694636
I ordered this item to use while golfing in the hot South Carolina summers. Being near the coast, it becomes very hot and very muggy in July/August. I had one of the blue cooling towels and it worked well, but cooling my head was a priority.
The TechNiche cooling cap is a different material than the towel, but works on a similar principle. I tried the cap on one of our hottest days this past week. I soaked the cap in a cooler of ice and water then wringed it our before putting it on. It was very cool and very refreshing. It did exactly what I hoped--it cooled my head quickly and provided a lot of relief from the heat. It looks a little goofy, so I put my straw golf hat on over the cap--no problems.
The cap stayed cool for a good twenty minutes before I took it off and re-soaked. It probably would have been fine if I just did the snap trick, but the cold water and ice was hard to pass up.
Overall, I think this is a good investment for cooling down in hot situations. It fits well and doesn't slide around. It cools as advertised and it fits under a more conventional hat. A pretty small investment for the relief it provides.
908386
I really was happy with this product.....until it sat in my car on a hot day and lost its form It was 85 degrees outside so I'm sure it was hot inside  but i definately did not expect that
1517802
So when I got this I was very happy, I tested it on a game tha normally makes my laptop very hot and the internal fan is on maximum, now it's at about 70% because of the cooling pad. The fans are a bit loud but what did you expect with 4 120 millimeter fans at 1200 RPM. The extra USB port is very useful because I use all of them with my mouse and my phone charging  then with the plug for the cooling pad. The bottom is VERY open on the bottom and I have caught my fingers on it numerous times when I am going to move my laptop. Overall this laptop cooler is worth the buy if you want something to cool your laptop. Even if you are not a gamer this cooling pad will keep your laptop from heating up that much. Then again if you don't like the fan noise, this cooler is noticeable when you have it on.
2053503
At first this product was hard to set up because you got two little boys running around while you work, but that didn't stop me from fixing !It took me a while to figure out why I could feel the hot air coming out from behind instead of cold air  ,you had to really squeeze the really movable exhaust tube inside the hole! then after a few weeks I notice the leak from the bottom ,I didn't know you had to drain it (duh!) well how should I know? I just borrowed it ....,this is a really nice AC and the cool air definitely cooled us down
2882691
It cools great. I like the 2 directional fan. Yes, it does make a rattle/grinding noise outside and I thought something was wrong with it but see that another reviewer commented on it. However, it does not change my positive review of it; as it has many nice features and cools great!
4162639
After seeing all the poor reviews of the many different 12v powered coolers available here on Amazon, I was a little bit hesitant to purchase one myself.  This one was the one with the least negative reviews, so I decided to give it a shot.  I'm happy to report that the cooler worked well for my entire trip, covering 3 weeks, 3 days on the road.  I was actually impressed with how cold it kept my drinks; it worked better than I'd expected, even on days when I had to leave it in a hot car for short amounts of time.  At the end of some days, there was even ice on the cooling vanes.

Some issues of note:

This type of cooler is GREAT for keeping things cool, but not so much for cooling down something that's warm.  If you possibly can, pre-cool your food and drinks in a fridge, and run the cooler for 30-60 min before loading it.  If you can't do that, put something else frozen in with the warm stuff, like some of those freezer gel packs or bricks, or even frozen bottled water.  That will help to cool things down more quickly.  Don't use loose ice, though; if enough of it melts, the water will block the cooling vanes, which pretty much makes the cooler useless (and if the water level gets high enough, it could damage the cooler's motor).

The cooler doesn't do anything about humidity, so if it's a humid day, or you put items with condensation in the cooler, you'll probably end up with a small amount of water in the bottom of the cooler when you unload it again later.  Placing a small towel in the cooler helps.  Leaving one underneath the aforementioned cooling vanes when you unload the cooler overnight is good too; that way if any ice formed in there, it gets soaked up when it melts.  Wiping it out nightly is definitely a good idea.

Speaking of which, those cooling vanes have some slightly sharp edges.  Be careful when wiping around the bottom of the vanes; they could scrape a knuckle pretty good.

The unit cools with circulated air, so there has to be at least some room for air to circulate inside it.  You can't pack this cooler completely full.  Not a huge deal for me, but if you have a need to haul that much stuff in a powered cooler, then you're going to need a bigger one.  Also, loading the cooler with cans is slightly awkward, because the cooling unit is in the middle of one side of the cooler, and 'sticks out' into the interior by about 3cm.  I squeezed in some bottled water, since the plastic bottles are a little bit 'squishy', to keep my cans from rattling and sliding in the cooler.

Finally, it's kind of cheap that the unit doesn't come with a wall adapter.  I'm not complaining too hard, but unless you plan on staying someplace with a fridge every night while on your trips, you're going to need the optional adapter.  You can't leave this thing hooked up overnight in a vehicle; it'll drain the battery.

Otherwise, yeah, it was great.  I'd recommend it to anyone considering traveling with a cooler.  It sure beats dealing with an ice chest.
2558457
I wore it under my short sleeve polo shirt inside air-conditioning room.
It has nice cooling feel when touched.
195853
I was not sure about this being so light and simple I didn't think it would have much effect of cooling of warming on a cold day. I purchased knowing that a 630 mile ride I was doing was going to get very hot and sweaty. This does wick the sweet away really well. I wear it every ride now and a recent cold ride I was shocked at how much better it is than without anything under a jersey, I stayed warm on a 55 degree day.
3158322
I'm not sure if I'm wearing this incorrectly or that it doesn't work, but I definitely feel cooler post-run after taking this off. So it heats up your waist pretty well. Not sure if I've had it long enough either.
3873051
Picked this as everyone seemed to be raving about it and im glad I did. Temps were icy cold on my 212.