This down shirt blouson is made from recycled ultra-lightweight nylon, which is synonymous with the brand, and is environmentally friendly. The downproof function eliminates the need for down packs and prevents feathers from falling out, making it lightweight. It can be worn as a main outerwear, and is also highly versatile, allowing you to enjoy a layered style as an inner layer. This is a piece you'll want to add to your adult wardrobe to expand your range of outfit for the fall and winter season.