Under ArmourMen's Sportstyle Tricot Joggers

Can I wear these in the pool?

Im 32 waist and 34 inseam, should II go for medium?

What size should get for a man who’s 6’2” and 255lbs? he typical wears xl, but i’m wondering what would qualify as x-tall?

What size should I get I'm a 36x28?