Serfas EXPANDABLE HALF 5L Frame Bag Black Compatio_Enriched Given its proven durability and

Given its proven durability and waterproof performance

but how our manufacturing methods and materials affect product performance

Hinge design for simple mounting

#5 YKK water resistant zipper

Lightweight glass fiber reinforced nylon sole

Serfas EXPANDABLE HALF 5L Frame Bag Black Compatio_Enriched Given its proven durability andThe Serfas Ark Expandable Half Frame Bag can adapt to accommodate more gear with an expandable bottom and resists the elements with a durable water resistant construction. Thirsty? Pack your favorite hydration bladder and utilize the integrated Hydration Port routing. Design Updated (2020) 5 additional frame attachment points have been added to the bag bottom for an even more optimal secure fit on various frame shapes and sizes. Expandable Storage (3L