Imported Rubber sole More feel-good cushioning: PWRRUN cushioning provides just-right softness and a springy, more responsive feel than you d expect from a shoe this supportive. Smooth stability: Plenty of underfoot support pairs with a more contoured shape giving you a super smooth feel with every stride. Stable doesn t mean stiff: With foot-hugging FORMFIT and a more flexible outsole, the Omni delivers the perfect ride for lots of easygoing miles. Lighter Footprint: This style is vegan and contains recycled upper materials.