Original Frostproof heavy flannel shirt made in U.S.A., circa mid–late 1960s. Constructed from thick brushed 100% cotton with signature frosted texture for superior warmth and durability. Features double flap chest pockets, wide pointed collar, and reinforced hem, rugged American workwear with timeless cold-weather utility.
The Sanforized label confirms early production before Frostproof’s shift to poly-blend fabrics in the 1970s. A true heritage piece from the golden age of American flannel manufacturing.
Condition: Good vintage condition with minimal signs of wear. Size: Tagged 17 (fits XL, refer measurements).
