PRODUCT DESCRIPTION: The Omni 20 is back with its signature support and a smoother ride than ever before. With more beveling at the heel and forefoot and a more flexible outsole, each step flows easily into the next. Pair that with PWRRUN cushioning for a soft, springy feel and you have the perfect blend of support and comfort. FEATURES: PWRRUN cushioning gives you springy energy return and plenty of durability Extended medial post supports the body's natural alignment with added guidance More flexible TRI-FLEX outsole for a smoother run FORMFIT hugs the foot in 3D comfort and delivers our most personalized fit yet Engineered spacer mesh provides structure or stretch where needed and enhances breathability A combo of iBR+ in the forefoot and XT-900 in the heel provide cushioning where you want it and durability where you need it