It is made from permafleece, a 12 ounce/300gm polyester fleece. As an optional extra to a number of our coats, it is durable, breathable, quick drying and offers the wearer warmth without weight. This liner also attaches by buttons over the standard 100% cotton logo printed lining, and is finished with bounded edges. It has a pocket slit access, and the garment has been treated with Anti pill technology that helps to reduce surface pilling. Forest Green Only