Long trail days in hot weather require clothing delivering exceptional airflow and moisture management. The Velox SS utilizes Arc'teryx Libro(TM) stretch polyester micro mesh to meet these performance demands. Highly air permeable, the quick-drying fabric is engineered for maximum air circulation and moisture evaporation and delivers the durability required to withstand extended use while wearing a pack.The redesign includes an updated style and silhouette and a reduction inseam size with merrow stitches. Weight: 100 g / 3.5 ozFit: Regular FitActivity: Hiking / TrekkingModel: 20987