Long johns set:2 Pieces thermal set,shirt and pants.
Spandex,cotton,polyester.Hight Elastic,lightweight,thin,close-fitting,sweat-absorbent,breathable,and warm
Thin thermal underwear:BASE LAYERS,it won't look bloated,no matter if you are exercising or working,there is no obstacle,and keep warm cozy in freezing cold climates or bad weather.
Whether it is worn alone at home,as a pajamas,or add an extra layer of warmth under your clothes,as a thermal underwear,it is a good choice.
Machine washable with low temperature water,using mild gentle soap,no bleach.