Brand: Naturehike Model NO.: CNK2450XB023 Name: Oxygen Series Casual Backpack Color: Black, Light Gray, Blue, Deep Gray Weight: About 680g/610g Size: 47x20x14cm Capacity: 20L •Black and Light Grey Material: Fabric: 100% Polyamide Fibers Linings: 100% Polyamide Fibers •Blue and Deep Grey Material: Fabric: 90% Polyamide Fiber, 10% Polyester Fiber Linings:100% Polyamide Fibers