- Fabric information - Light - Weigh 20d polyamide - Fabric. Warmloft performance technology insulation. Durable water-repellent finish. Polyester lining. Medium - Weigh fill. 140 GSM body insulation wadding - Weigh. High warmth to - Weigh ratio. Special features - Inner zip guard. Stretch binding to armholes and hem. 2 zipped lower pockets. Easily compressible. Concealed Internal side seam zipped embroidery access. - - Fabric information - Light - Weigh 20d polyamide - Fabric. Warmloft performance technology insulation. Durable water-repellent finish. Polyester lining. Medium - Weigh fill. 140 GSM body insulation wadding - Weigh. High warmth to - Weigh ratio. Special features - Inner zip guard. Stretch binding to armholes and hem. 2 zipped lower pockets. Easily compressible. Concealed Internal side seam zipped embroidery access.