PNW 2-Layer Fabric (200D x 320D Heavy Duty 100% Nylon Oxford Weave) – Trew builds the PNW Originals collection with a heavy-duty fabric laminated to a durable polyurethane waterproof/breathable membrane. The woven fabric is constructed in an Oxford weave - similar to a canvas work pant - with heavy-gauge 200 denier by 320 denier nylon yarns. New this season, this waterproof and breathable fabric is now rated at 20,000mm waterproof and 20,000gr/m² breathable. The final package is a 2-layer fabric engineered to keep you dry, comfortable, and well-protected against wear and tear