The Carhartt Heavyweight Cotton Thermal Tee is built with heavy-duty 9.5-oz., 100% ringspun cotton fabric for superior comfort, warmth, and durability. The rib-knit crew neck and cuffs help further seal out the cold. Flatlock seaming throughout reduces abrasions and allows for easy layering. Low-shrinkage knit fabric is 30% heavier than most other cotton thermals to provide a consistent, comfortable fit. Imported. Style #: K228.