For superior comfort, warmth and durability, our heavyweight cotton thermal crew neck top is built with fabric that is 30% heavier than most other cotton thermals. Its rib-knit neck and cuffs lock in the warmth. All seams are flat-locked for added strength, and its low shrinkage knit provides a consistent, comfortable fit.*9.5-ounce, heavyweight, 100% ring-spun cotton *Rib-knit crewneck and cuffs *Reinforced stitching