City Threads Boys' Thermal Underwear Long John Set - Made in USA Made in the USA! Quality you can trust and proudly keeping jobs local High-quality thermal underwear with hip contrast stitching Great for lounging and layering! Perfect combination of warmth and breathability. 50/50 cotton/poly. Made with safe dyes and no harsh chemicals Top-quality, locally-knitted, American-made fabric that washes well and is long-lasting