The Indera Men's Cotton Rib Knit Union Suit is ideal for working, lounging, camping and more. This Union Suit is made of 100% pure cotton for natural comfort, softness and absorbency. Best used as a base layer in a variety of cold weather activities, the Indera Men's Cotton Rib Knit Union Suit features smooth 1x1 rib knit cuffs, for added protection from the cold. And, the Union Suit is shrinkage controlled for lasting size. Full cut with a button-down front and one-button vertical flap seat, this tagless union suit is rated for cold temperatures and medium activity.