yeah that's what you need when outdoors!
They are still cotton but they are a really weird shirt, my old work went to the Yakka vented cotton shirts after poly cotton was banned as it was a fire hazard. After one summer everyone went back to the the traditional cotton shirts, they are thicker but have a more open weave so they dry and stretch better when wet.
Pfft Rubbish, natural products are garbage, I have tried 150Gr Wool, active cotton, organic cotton and nothing beats a good plastic shirt(haven't tried bamboo yet). Open weave textured nylon shirts are magic, I use them when trail building and riding and love them, I have however leaned that the anti mosquito treatment is a lie, that stuff does nothing!
Nope just short sleeve riding jerseys(ies?) they ahve a sort of honeycomb pattern so only a small section of the fabric touches the skin but still enough to pull moisture from you. I have tried synthetic shirts woven like a traditional cotton shirt and they don't seem much better than cotton however there are shirts that use an endothermic reaction to coll you(supposedly)-
Columbia’s maize-based T-shirt
Posted - Mon, 12/03/2012 - 22:00
The Omni-Freeze Ice base layer T-shirt made by Columbia Sportswear is a rather strange addition to the many base layer options for athletes to utilize. The shirt itself is tight-fitting and blue in color but the strange part about it lays hidden deep amongst its fibers. Embedded in the shirts woven structure is a phase-changing compound that is meant to help runners and bikers adapt to hot environments. It does this by promoting a sort of endothermic reaction that causes a cooling effect.
The company has referred to the shirt as having various small crystals within the fabric that undergo a change in state from solid to a sort of gel. On a hot day, your sweat actually triggers the reaction and the fabric’s state change absorbs heat from its surrounding environment.
The tiny crystals seem to work. A few minutes into a workout, when sweat starts to soak through the shirt, you can feel the fabric cool on your skin.
The magic fabric…
Columbia won’t cite what the compound is. The company will only state that it is “maize-based.” That’s right, corn! Whether the pixie dust comes from the kernels, stalk, silk or other plant part it won’t say. In its advertisements, Columbia will leave out the botanical references and call the technology “Omni-Freeze ICE.”
The T-shirt, one in a line of items Columbia will develop with Omni-Freeze ICE, will cost $55.
sounds very interesting. Have to look out for some of them as I'm sick of being drenched when hiking.
I often wear skins leggings (can't think of the name they're meant to be called and I doubt Skins would thank me for calling them leggings, but lets face it that's what they are!) for trying to rehabilitate my knees and ankles after an injury and WOW they get things very cold quick. whatever their fabric is made from it cools you down fast and never noticed a heap of sweat after using them either.