Unopened, New US ARMY ECW (EXTREME COLD WEATHER) UNDERSHIRT ANATOMICA Genuine US Military Surplus, M.M. Nemiroff Long Sleeve Thermal Undershirt, MEDIUM size This is an undershirt, commonly called a thermal, used by the US military in extremely cold regions. It uses thick, firm 100% cotton fabric, and can be worn as a single layer without being see-through. The modified waffle weave, combined with the 100% cotton material, provides a comfortable fit with excellent breathability and a pleasant feel against the skin. The collar has a binder neck specification, reducing stretching from years of wear. Compared to other manufacturers (such as HEMINGWAY APPAREL) that also use the same NSN label and have a ribbed modified waffle weave, the M.M. Nemiroff version features a deeper, more three-dimensional straight rib modified waffle weave, which is unique to this company and ensures better breathability and air layer retention. Also, although it is size M, the actual size is larger than the M size of HEMINGWAY APPAREL. Size: M Length: Approximately 70cm Width: Approximately 43cm Shoulder width: Approximately 41cm Sleeve length: Approximately 60cm Measurements are approximate. Please understand that there may be individual differences and slight errors. MADE IN USA Material: 100% Cotton Color: Natural Condition: New, Unused, Unopened The product is new, unused, and unopened. It will be sent compactly with the package vinyl unopened. There may be dirt or tears on the package vinyl. Judging from the items opened for photography, they appear to be in very clean condition, but there may be storage wrinkles, minor stains, fraying, and the storage odor unique to US military surplus items. Please understand this as a characteristic of the product. Please refrain from complaints after opening the package. Product images are reused. Please purchase with an understanding of vintage items.