For sale: ALPAKA San Francisco brand backpack. Purchased from their official website. The backpack is new. Specifications: Color: Black Outer material: Axuflux 600D Inner material: Axuflux 400D Bag size: 24L Laptop compartment up to 16 inches Total of 4 zippers/compartments Internal dividers 2 cup holders (1 liter) YKK Aquaguard zippers The backpack is new and unused. Note that the backpack is out of stock.