Stormtech Mens Expedition Soft shell Breathable Waterproof Jacket Polyester, Spandex, 93% Polyester 7% Spandex bonded to TPU Laminate and brushed. Waterproof (10,000mm). Breathable (10000g/m/24hr). Stormtech H2Xtreme waterproof/breathable outer shell. Center front water repellent zipper.