ROCKYThermal Underwear for Women, Heavyweight and Midweight (Thermal Long Johns Set) Shirt & Pants

I’m 5’6 and 137 lbs. Will a medium fit?

Are these smooth and soft or have irritating seems in them? I have very sensitive skin and cut every tag off of everything?

I'm 5 foot 8 inches 187 what size should i order so the waist isn't so tight? My waist is a36 inch.

Do these shrink in the wash?