As you travel across wild terrain, conditions change. Wind and rain become sleet, then snow, then sleet again. The Beta AR Pant delivers waterproof, windproof, breathable protection for comfort across these changes. The Gore-Tex Pro with Most Rugged Technologya next-gen material we developed in collaboration with Goredelivers maximum durability. Articulated patterning adds freedom, WaterTight side zips provide drop-seat functionality, and a hidden RECCO reflector improves searchability in emergency situations. Gore-Tex Pro with Most Rugged Technology, RECCO reflector, and WaterTight side zippers for rapid ventilation. Note: Arx'teryx WaterTight zippers are highly water resistant, but not waterproof.  Arc'teryx do not recommend keeping items in your pockets that may be damaged by moisture. Waterproof, breathable, lightweight and durable Tiny GORE seam tape (13 mm) Micro-seam allowance (1.6 mm) reduces bulk and weight Optimal ventilation with comfort and mobility Articulated knees