Stay warm and cozy in style with Rothco’s classic one-piece Union Suit. Perfect for those long winter nights, this thermal underwear is made of a warm and comfortable knit fabric that ensures you stay snug. The suit features a full cut design for added comfort, making it an excellent choice for lounging at home or layering under your winter clothing. The 8-button placket closure allows for easy dressing and undressing, while the front vertical seat flap with a button provides convenience without compromising on warmth.