The only company I'm aware of that does this is: https://www.insectshield.com/Insect-Shield-Your-Clothes-P338.aspx
That’s it.
He wore this shirt:
https://www.insectshield.com/Mens-Technical-Field-Shirt-P277.aspx
and these pants:
https://www.insectshield.com/Mens-Cargo-Pant-P240.aspx
Thanks FRiend