NIKE Lady Free 5.0+ Running Shoes mesh Rubber sole Shaft measures approximately 2.5" from arch ** UPDATED ** Textured Mesh Full Inner Sleeve - For a dynamic, sock-like fit that hugs the foot, preventing slippage. ** UPDATED ** Diagonal Cuts - Through the arch to encourage natural motion flexibility and help increase foot strength. ** NEW ** Flywire Cables System - This latest version of Flywire consists of soft yet durable cables that wrap the midfoot and arch from underneath the foot for a glove-like, supportive fit that adapts to your stride. Low Profile Feel (8mm Offset) - A low-profile midsole delivers a natural barefoot-like feel. With an 8mm difference between heel and forefoot height for greater cushioning while still promoting a natural stride. Flex Groove Outsole - The flex groove outsole provide good flexibilitymade up of deep cuts along the length and width of the midsoleenhances natural range of motion, encourages a smooth, efficient stride and helps maintain stability.