The hyperlinks, which I'm not actually going to type into my browser out of an abundance of caution on the chance that it takes me to a malicious website, do not match at all the web address for the mens and womens clothing sections of the actual Pactimo website so it smells like a scam to me.
If someone wants to follow those hyperlinks and tell us where it takes them, let us know.

Here you go...

Men's - https://www.pactimo.com/collections/...d-bayside-blue

Women's - https://www.pactimo.com/collections/...rsey-goldenrod

I guess it's just a shortened of those links. Weird that they would make such a wild claim of performance on just a jersey alone which, like most others here, I don't buy for a second.

I note that they say "can increase athletic performance by as much as a 25%", which suggests that's the extreme edge of possibility. I'm curious what the exact conditions of temperature, humidity, and exertion level have to be to see that 25% increase. And, of course, compared to what? I mean, are we talking 95 degrees with 95% humidity, wearing this Wunderjersey compared to a couple sweatshirts and sweatpants, all under an impervious nylon shell?

They're only claiming what their material supplier is claiming. Link again below, and as has been mentioned, I don't think anyone has found the actual CU Boulder study yet.

https://www.thirtysevenfive.com/

I recently listened to a podcast...Escape Collective, I think....where they talked about the effective watts saved by putting your snacks in your center jersey pocket vs the side ones. I guess that now everything has been studied relative to aero so now we can obsess over something else.

Up next, right-over-left vs left-over-right for the lacing pattern on our cycling shoes.

Laces on cycling shoes ???

BOA cable lacing or MTB shoes with actual laces...

Stuff anything

I'm still waiting for a data base (similar to BRR) for the aero drag of different tire tread patterns, including different tire width and different speeds.

Given the aero advantages of chest fairings, you should probably just stuff them down the front of your jersey.

Lace is OK on shoes, but not on my bibs.

You must be really area-ruled.

Of course, if you’re prepared to drop 249 pounds of the King’s realm…

https://www.sigmasports.com/item/Spe...ng-Shoes/10T5H

Sorry to revive an old thread, but I have an update.

When this thread was first posted, I actually bought this jersey (Pactimo Summit Aero Mesh Jersey) along with cooling base layer they recommended to use with it, just to satisfy my curiosity. The day it arrived was a fairly hot day, so I went for a ride wearing the jersey and base layer. On the ride, I thought maybe it was a little cooler than other jerseys, but then a downpour came out of nowhere, and that was the end of the test. I have worn the jersey a couple more times since, with and without the base layer, and I concluded that it was nothing special.

Several months later, I bought a Pearl Izumi Pro Mesh Jersey (because I liked the color, but also because I like having a zipper pocket for my keys, and PI is one of the few brands of cycling kit that knows how zippers are supposed to be installed in the American market). It arrived, and it appears to be made of exactly the same material (I can't speak to "Cocona particles" that Pactimo mentions, whatever those are). Fits great, looks great, fine. Last month, I went on a longish ride in the heat, full sun, no shade, and I wore this PI jersey. About three hours in, I started to get chills, mainly on my forearms. I assumed I was experiencing a symptom of heat exhaustion, so I hunkered down and finished my ride, which was just another twenty minutes. Then last Sunday, I wore this PI jersey for another hot ride, though this time it was mostly overcast. About an hour in, I was feeling okay, but I stopped at a park to rinse sweat out of my eyes, because my headband was already saturated. The water was decidedly warm, and I took no care to keep it from splashing onto my jersey. As soon as I got going, I had chills again, mainly on my forearms. I didn't think I was suffering much from heat yet. Then I noticed that the front of my jersey was wet and cold to the touch. This time, I leaned into it, and rode another two and a half hours. It was a strange feeling. My torso and arms were cool, my head was uncomfortably warm and sweating, and my legs were unbothered. Eventually, my sweat output wasn't sufficient to keep the jersey wet, and it was dryish by the time I reached the end of my ride.

So now I'm thinking this mesh fabric for both jerseys is perhaps quite effective at cooling, as long as it has absorbed enough moisture to work with. More data is needed. I really wish I could find a way to keep my head this cool.

Better ventilated helmet? It's been drilled into winter sports to keep your head warm to prevent heat loss, especially with lots of blood vessel area on top of your head. For cooling down, the opposite should apply.

Regarding the torso cooling you felt, no surprise, heat of vaporization (evaporative cooling) increases cooling of anything immensely, provided air conditions are such to allow fast evaporation. It's why, on a summer day, you step out of a pool and are suddenly shivering, that's from the water on your skin evaporating quickly. Dry off, and you stop shivering.

Bummer. I thought this was about my home state.

How YOU doin’?

I escaped at age 18 back in 1983 but frequently go back as family still there.

The rain cooled you off, didn't it? That's how the jersey works.

Graduated Hackensack HS in 1964. Went to college in MA. Moved to CT in 1970. How's ya mudda?

''An independent university. study.''

I was in Jersey on Tuesday. Picked up some tomatoes, sweet corn, and blueberries. I also got $2.95/gallon gas.

Based on the results, wouldn't you gain 50% riding naked. At least until the police show up.

Science.