Obermeyer 25087 Men's Alpinist Stretch Pant 100% Polyester HydroBlock Pro 100% Polyester Stretch; Permaloft 40gm HydroBlock Sport - Obermeyer independently third party tests all of its technical fabrics for performance verification. Our high performance specialty fabrics use fully coated hydrophobic laminations and a superior DWR polymer coating for stain protection and coating integrity. HydroBlock Sport resists up to 10,000mm before water penetration while allowing 10,000 grams of water vapor to pass through within a 24-hour time frame Full-Motion Articulation - Garments at Obermeyer are patterned for motion. Extra length in pants and pre-curved knees are crafted to mimic the shape of a body in motion. Full-Motion Critical Seam Sealing - Obermeyer has tested and determined construction seams which are critical to the overall weatherproof performance of an outerwear garment. Through pattern mapping we are able to offer the optimum level of protection, minimizing the garment's interior exposure to the elements Control Zone Ventilation with Mesh Gussets; Available in Special Sizing; CZV - Control Zone Ventilation with mesh gussets; Reinforced scuffguards; Water-resistant powder cuffs; Cargo pockets; YKK zipper hand pockets; YKK zippers - heavy duty; YKK zipper fly with windguard and stormflap; Adjustable waist - elastic with hook and loop tabs