Hong Kong-based store Kapok has teamed up with New York premium accessories brand Haerfest on a special collaboration for their Fall/Winter 2013 collection. The results include the above minimalist shell backpacks, in a combination of canvas, nubuck cowhide leather and ghost PVC. With an expandable, fully-lined main compartment and semi-concealed front pocket, the backpack excels in both form and function. It comes in four different colorways including navy/tan nubuck, stone/gold, black/gold and black/matte black. The backpacks are available now at Kapok.