XP 4-layer fabricOur high performance 4-layer fabric is engineered for extended durability, extra waterproofness and great breathability. Supplex nylon 6 woven face fabric has a great soft feel and is highly durable. A DWR (Durable Water Repellent) treatment prevents the fabric from becoming waterlogged so that the fabric stays breathable. A hydrophobic, microporous polyurethane coating is applied to the face fabric. The pores are too small to allow water droplets to pass through, but large enough for water vapour to pass through to the outside air. A hydrophilic polyurethane membrane laminated to the hydrophobic coating transfers water vapour molecules along hydrophilic chains to the coating. The nylon 20 denier tricot mesh lining protects the waterproof membrane and disperses moisture to provide the largest surface area for moisture absorption and transfer. Waterproofness: 25,000 mm. Breathability: 4,000 g/m2/24hrs. Breathability tested by the A1 method.