U.S. Military Tan499 ECWCS Gen III Mid-Weight Underwear Waffle Top (Level II) USA MADEAR 670 1 Tan499 ECWCS Gen III Mid Weight Underwear Waffle Top (Level II) USA MADE Level Two of the ECWCS (Extended Cold Weather Clothing System) the Mid Weight Thermal Shirts are an essential base layer for military and tactical professionals. These are some of the best thermals on the market. The quality is outstanding, a night and day difference compared to ANY NON USA imported copy! If you want the absolute best of the best here it is. Proudly made