Hard to find dyeable long johns! These are 100% rib knit cotton, not sewn with cotton thread. Cut really big to allow for shrinkage on first wash. 7 button front, 1 button rear flap (can be sewn closed to eliminate drafts).
A note about Union Suit sizing: This garment is designed to fit SNUGLY after washing and shrinking. Please look at the "Chest (will fit after wash)" measurements to see the size this garment will stretch to snugly fit after washing and shrinking. Union suits have and 8% shrinkage rate.