Comfort Fit Winter Boy's Warm Thermal 100% Cotton 2 Pcs Set White Size S, M, L, XL Imported Boy's thermal 2pcs set. 100% cotton. Soft cotton-rich knit feels soothing against skin. Breathable waffle texture. Stretchy ribbed cuffs fit comfortably. Stay warm all winter. Quick dry and keep comfortable. Sturdy seams help ensure lasting wear.