This is a polyester shirt from the Uniqlo airism range.
I like the shirt, but recently it got these spots on it? Is this from sweat?
This picture is after washing with lots of detergent.
Is there a way to get it out?
It seems to disappear after a while, but comes back after washing.
The shirt also smells ok, but after wearing it for a short while it starts smelling.
You want linen, but it’ll still be pricey. Might be able to find something second hand? Linen is capable of truly remarkable evaporative cooling and is amazing for getting rid of moisture and sweat