An article of footwear including an upper and a sole assembly secured to the upper and including a support assembly having an upper member and a lower member spaced from the upper member. A first layer is positioned beneath and in contact with the upper member and has a wave shaped profile with a plurality of first wave crests and first wave troughs. A second layer is positioned above the lower member and has a wave shaped profile with a plurality of second wave crests and second wave troughs.