Columbia Men's Ridge 2 Run Pant Water Resistance: Waterproof--Treated fabrics and specially designed zippers, closures, and seams completely seal out water and rain. Outer Material: Omni-Tech--Waterproof and breathable fabric construction that prevents rain, snow and moisture from reaching the interior of the garment. Breathable--Allows moisture inside the garment to escape and evaporate. Promotes air flow. Fabric Content: (Shell) 100% nylon; 100% polyester print; 100% polyester; 100% polyester twill Fabric Content: (Lining) 100% nylon taffeta; 100% polyester tricot