You are looking at a vintage thermal from ww2 issued to the u.s. navy. 64% cotton, 36% wool. Non itch blend. This item is in great pre owned condition. No major signs of wear & tear. Some discolorations on the back shown in photos. Overall looks great. Labeled a size 34, will stretch considerably for best fit. Should fit approximately a size small. See measurements to ensure proper fit. Measurements (laying flat): 29" top of collar to bottom in back 15" pit to pit 20" pit to end of cuff 21" shoulder seam to end of cuff 19" shoulder to shoulder seam at very top Wwii U.s. Navy Small Cotton/Wool Blend Thermal Men’s Vintage