Fruit of the Loom mens Classic Midweight Waffle Thermal Underwear Bottoms

I really wished they offered better sizing chart on amazon for thermal underwear bottoms....i"m 6'4, 34 waist and 34 inch inseam. l or xl or other?thx

I'm 5'7" tall with a 34 to 36 inch waist does anybody know what size I would need?

How much do these pants shrink after washing? If they do shrink, do they stretch back to the original size?

I'm a size 31-32 for jeans and I have full-ish body type. Which size is best?