synthetic-and-mesh UPPER: AN EXTREMELY LIGHTWEIGHT COMBINATION OF MESH AND SKINS WITH NIKE DYNAMIC FLYWIRE TO LOCK YOU DOWN DURING YOUR TOUGHEST WORKOUTS. MIDSOLE: NIKE FLEX FOREFOOT UTILIZES HOT KNIFING TO CREATE A FLEXIBLE FOREFOOT. TWO DENSITIES OF FOAM PROVIDE SUPERIOR CUSHIONING DURING LONG WORKOUTS. OUTSOLE: MINIMAL OUTSOLE COVERAGE PUTS AGGRESSIVE TRACTION ONLY WHERE YOU NEED IT FOR DYNAMIC WORKOUTS ON MULTIPLE SURFACES Shipping Weight: 3 pounds (View shipping rates and policies) ASIN: B01EBESRA0 Date first: April 15, 2016