Mens tshirts that collars don’t sag/fold

My partner needs tshirts that the collars will not sag/fold. I have tried a handful of brands. He is a country/farming kinda guy lol but during the day works in an office setting. He prefers a “heavier duty” tshirt not an undershirt necessarily, he use to almost exclusively wear carhartt but seems the new ones are not the same. They fade and collars kinda roll down and flip after about 2nd wash. Anyone recommend any men’s tshirts that will not have stretched out sagging collars ? He is also very prone to staining his clothes lol, so if not crazy expensive be a plus as rotate office work to farm work fairly regularly & buy new work ones, but understand something better quality will cost more! In case matters he also prefers tshirts in Tall sizes, as he is tall and tucks his tshirts in so 2xl tall is what he wears. Thanks for any recommendations:)