This is a Level 7 jacket. ECWCS Level 7 PrimaLoft Jacket This Level 7 is the final layer of cold-weather outerwear. The inner lining uses PrimaLoft, a high-tech material made with polyester developed by the U.S. company ALBANY for the U.S. Army as insulation for sleeping bags. It is said to be about eight times warmer than down. Unlike down wear, it doesn't have feathers that come out, requires less maintenance, can be washed in a washing machine, and is lightweight with a soft texture. The shell uses lightweight, breathable, water-repellent fabric, and it doesn't have the stiffness typical of film-coated materials, providing a comfortable fit. The hood is stowable in the collar, and the elbows and knees are reinforced. ECWCS Level 7 Gen 3 PrimaLoft Jacket Size: L-R Purchased new for about 45,000 yen. Although the brown color makes it less noticeable, there are considerable stains and dirt. Please be aware of this. I am 172cm tall with an average build, but I can wear it oversized without any issues. It will be folded for shipping. Please understand that there may be wrinkles.