SKU Gregory ARRIO 24 Backpack Material Body: 210-denier nylon ripstop with C0 DWR Bottom: 420-denier 40% recycled nylon with C0 DWR Lining: 40% postconsumer recycled 135-denier polyester with C0 DWR Suspension: multi-density foam Weight 853g Capacity 24L Dimensions 48.0 × 30.0 × 23.9 cm Highlights An ideal day-hiking pack with a clean, modern design and no compromises on performance, access or comfort Body-hugging fit supports dynamic movement and optimal comfort on the trail Experience optimized airflow, stability and temperature regulation through the progressive mesh and frame-supported back panel VaporSpan tensioned back panel with engineered mesh for uninhibited airflow and body-mapped support Breathable shoulder harness with perforated foam and open mesh Sternum stability strap with integrated safety whistle and hydration hose routing clip Internal hydration sleeve with SpeedClip hydration hanger compatible with Gregory Hydro reservoirs (reservoir not included) CloudControl hipbelt provides flexible, stable support as you move Top, quick-access zippered pocket for secure storage Dual stretch-mesh side pockets with angled access for ease of use and sized for larger bottles Trekking pole system with elastic bungee loop and lower webbing attachment Front reflective attachment loops Front fabric stuff pocket with stretch-mesh gussets for exterior storage Custom ComfortGrip molded zipper pulls and molded webbing keepers for strap management Pack body, pack bottom and lining have a C0 durable water repellent (DWR) designed without PFAS