This is a light and warm down vest from MUJI. It has been used, but I think it can still be used. It's also great as an inner layer for coats or fleece. It's a volume that doesn't take up much space. - Size: M - Outer fabric: 100% nylon - Filling: 90% down / 10% feather - Lining: 95% nylon / 5% polyurethane Thank you for viewing.