An article of footwear includes an upper, a sole assembly secured to the upper, and a woven fabric of light elements forming a portion of the upper. In another embodiment, an article of footwear includes an upper, a sole assembly secured to the upper, and a light fiber forming a stitching line on a portion of the upper. In a further embodiment, an article of footwear includes an upper, a sole assembly secured to the upper, a powered element on one of the upper and sole assembly, and a power source operably connected to the powered element, with the power source received in one of the upper and the sole assembly and having a shape that conforms substantially to a portion of one of the upper and the sole assembly.