Arc'teryx Beta AR Pant Men's 100% Nylon Imported Buckle closure Machine Wash BETA AR PANT - The Beta AR Pant delivers exceptional versatility. The N40r-X GORE-TEX Pro fabric is a lighter weight ripstop that delivers complete weather protection, a high level of breathability and surprising durability. ALL ROUND - High performance weather protection and materials, emphasizing versatility for multiple activities. ARC'TERYX ESSENTIALS - Versatile high performance designs for diverse activities and conditions. BETA - Versatile: high performance for diverse activities and conditions. GORE-TEX - Waterproof, windproof and breathable textiles that offer fully protective environmental shelter.