Nike presents is first collaborative effort with Italian streetwear/sneaker retailer SlamJam. The "Optical Force" Air Force 1 Pack is clean and subtle, but still delivers quality and innovation. The upper is constructed of crinkled patent leather. This turns our previous thoughts of patent leather always being smooth upside down. And it looks proper. Plus, the vibrant patent leather colors in the pack contrast the white soles and premium white leather swoosh nicely. They finished off the sneaker with an embossed "SlamJam" logo on the heel tab. A nice touch for a classy and well-done collaboration.