External Jacket: Outer layer made in Hydro fabric, 18% Nylon 82% Polyester. Internal Membrane lining plus Seam Sealing Drawcord-adjustable hood Detachable System for inner puffer Double slider Zip YKK Hidden snap buttons and chest pocket Utility Internal Pocket Waterproof Internal Jacket: Internal Puffer padded in Primaloft® Black Insulation. NylonRLG fabric, 100% Polyester Solid Colour Frontal panel with double slider zip Padded in Primaloft® Seam sealed Utility Pocket