As One Of Our Most Tested Shoes, The Nike React Infinity Run Flyknit 3 Was Engineered To Help You Pursue Your Running Goals In Comfort. A Breathable Upper Helps Your Foot Feel Contained But Flexible, While Added Cushioning Around The Heel And Ankle Help Provide A Supportive Sensation. Plus, The Unique Rocker-Shaped Sole Helps Allow For A Smooth, Stable Ride On Both Long And Short Routes. So Keep Running, We’ve Got You. We Added Flyknit Throughout The Upper To Create Specific Zones Of Breathability, Flexibility And Containment. The Result Is A Cool Feel That Helps Your Foot Feel Secure While Still Allowing It To Move Without Restriction. Nike React Technology Is A Lightweight, Durable Foam That Delivers A Smooth, Responsive Ride. Shaped Like A Rocker, The Sole Has Been Engineered To Provide Support During All 3 Phases Of A Runner’s Stride. It Feels Flexible When You Push Off, Has A Smooth Ride As Your Foot Moves Forwards And Cushioning For When You Hit The Ground. A Wider Bottom Allows For More Stability On Contact. High-Rise Cushioning Is Placed Directly Under Your Foot So You’re Closer To The Foam For A Truly Responsive Experience. Hybrid Tongue Combines A Sock-Like Feel With The Adjustability Of A Traditional Design. Soft Padding Along The Collar Provides A Cushioned Touch Point. Additional Rubber On The Outsole Gives Traction And Durability.