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It functions as a rather large (but not overly big) daypack for your daily commute but can grow by 2 inches for an extra 6 liters of capacity when you need to pack it up for a weekend trip

Vinylon F remains one of the biggest reasons people continue to buy the Knken

The top lid detaches and converts into a daypack for side excursions

Extra large main compartment includes internal pockets for organization Interior padded sleeve can accommodate laptops up to 15" laptop Hydration hanger, pass-through access Breathable back panel Front mesh pocket holds extra items or separates wet/dirty gear from the rest of pack Exterior water-bottle pockets made from shell fabric and stretch mesh Bike-light clipping point at base of pack All materials 100% recycled and chosen with durability in mind