Official US Millitary PolyPro Cold Weather Drawers & Shirt Set Fleece Lined USA LARGE Made in USA Genuine GI US Military Surplus thermal underwear top and bottom combo Latest in cold weather technology 100% Polypropylene Fleece Lined Level 2 US Military GI Poly Pro cold weather gear Made in the USA Shirt and pant included. Bottoms and Top - Large Size Top NSN # 8415-01-227-9550 Bottom NSN # 8415-01-227-5545