A midsole for footwear includes at least one solid or hollow cushioning tube positioned therein for improving the cushioning of the midsole. Preferably, the midsole includes a plurality of cushioning tubes fabricated of an elastomeric material. The tubes may vary in diameter and/or wall thickness relative...http://www.google.fr/patents/US20070113425?utm_source=gb-gplus-shareBrevet US20070113425 - Cushioning system for footwear
