361 Spire 4 (Men)

361-SPIRE 4 Running Profile More rebound to propel you forward faster. Put more spring in your run in this high-performance trainer with premium cushioning.  Feature / Benefit  Upper features a breathable knitted upper with a roomier vamp promoting more ventilation and natural foot movement.  MORPHIT construction in the mid-foot and heel to provide a comfortable, secure and supportive environment.  Pressure Free Tongue is designed to provide comfort and avoid irritation during flexion.  Ortholite insoles utilize 20% recycled content while still retaining the performance fit and comfort that runners want.  The QU!K Spine is a carbon fiberglass shank that adds linear integrity to the mid-foot.  QU!K Flex 4Foot Engineering provides for a natural and balanced toe-off and enhances ground contact for better acceleration.  QU!K Spring+, an EVA foam designed to provide more rebound and comfort in a lightweight package. QU!KFOAM, a midsole material comprised of an EVA rubbe