An article of footwear may have an upper and a sole structure secured to the upper. The upper includes a base layer and a plurality of strands. The base layer forms at least a portion of an exterior surface of the upper. The strands are located adjacently to the base layer and form another portion of the exterior surface of the upper, the strands being unsecured to the base layer for a distance of at least five centimeters, and the strands having an elongate cross-sectional shape.