Helikon ECWCS Jacket Generation I Black 100% Nylon To fit chest (recommended): S 33"-37", M 37"-41", L 41"-45", XL 45"-49", XXL 49"-53" We recommend purchasing a size down from your normal size to ensure that you get a good fitted look Waterproof: 10 000mm. Breathable: 5000g/m/24h. Windproof. Material: 100% Nylon Cobra hood. YKK zipper & double storm flap 4 pockets. Ventilated sleeves. Hook-and-loop cuffs. Chest epaulet. Chin guard. Snow skirt