Designed for the daily commute or week*** escapes, the Arc'teryx Aerios backpack features an interchangeable harness system that adapts to your body for a truly custom fit. Built from ultralight yet abrasion-resistant materials, its 18L capacity is perfectly sized for essentials—whether you're navigating city streets or rugged trails. 93% Nylon, 7% Polyarylate Adjustable Straps Zip Closure Zip Pockets Style Code: X000009581-002291