I sweat a lot and I’m looking for T-Shirts.
If i search for fabric and summer the recommendation on website about clothes is linen or cotton.

They write cotton has:
low heat isolation (good in summer)
high moisture absorption

Now i saw on Amazon this synthetic shirts where everybody in the reviews writes he is wearing it in the summer:
https://www.amazon.de/Just-Cool-Performance-T-Shirt-atmungsaktiv/dp/B004NQ2MN0

But all the recommendations on websites are against synthetics because it is not breathable and traps heat.
It also does not absorb moisture – so all my sweat runs down to my pants all the time…

So why the reviews that this shirts are good in summer?