Footwear sole

An article of footwear comprising:

• an upper;
• a sole joined with the upper, the sole comprising:
• a base extending from a heel region toward a forefoot region of the footwear;
• a first wave element including a plurality of alternating first crests and first troughs, the first crests each having a first crest width and a ground contact surface, the first troughs each having a first trough width;
• a second wave element extending alongside the first wave element, without extending through any portion of the first wave element, the second wave element including a plurality of alternating second crests and second troughs, the second crests each having a second crest width and a ground contact surface;
• wherein the first crests are aligned with the second troughs, but farther from the base than the second troughs,
• wherein the first troughs are aligned with the second crests, but closer to the base than the second crests,
• wherein a predetermined number of the first troughs and the second troughs, less than all of the first troughs and the second troughs, are joined with the base to impair at least one of the first wave element and the second wave element from moving laterally relative to the longitudinal axis,
• wherein a ratio of the first crest width to the first trough width is at least 2:1.

An article of footwear comprising:

• an upper;
• an outsole joined with the upper, the outsole comprising:
• a base extending from a heel region toward a forefoot region of the footwear;
• a first wave element including a plurality of alternating first crests and first troughs, the first crests each having a first crest width, the first troughs each having a first trough width, the ratio of the first crest width to the first trough width being at least 2:1;
• a second wave element extending alongside the first wave element, without extending through any portion of the first wave element, the second wave element including a plurality of alternating second crests and second troughs, the second crests each having a second crest width, the second troughs each having a second trough width, the ratio of the second crest width to the second trough width being at least 2:1;
• a third wave element extending alongside the second wave element so the second wave element is between the first and third wave elements, the third wave element including a plurality of alternating third crests and third troughs, the third crests each having a third crest width, the third troughs each having a third trough width, the ratio of the third crest width to the third trough width being at least 2:1,
• wherein each of the first and third crests are aligned with each of the second troughs, but farther from the base than the second troughs,
• wherein each of the first and third troughs are aligned with each of the second crests, but closer to the base than the second crests.