The Nike Free 3.0 V4 is a new shoe from Nike with key new features that gives the runner supreme flexibility for the most natural-feeling barefoot-like ride.Numerous deep flex grooves promote Nike's most natural stride,while the seamless upper provides lightweight support and the mesh inner sleeve offers a sock -like fit.New and better really does apply to the Free 3.0 V4,utilising Nanoply throughout the upper,which is a micro-layer of engineered composite material that is laser-perforated for a skin-like fit that moves with each stride. The larger perforations are strategically placed in areas that need more flexibility while the smaller perforations are in areas that demand more support. The arch has been modified with transtarsal diagonal flex cuts for enhanced twisting,strengthening,and natural motion flexibilityIn the Nike Free continuum,the lower the number in a shoe’s name,the closer it comes to barefoot running (on the continuum,10.0 represents conventional footwear while zero represents the bare foot). The Nike Free 3.0 shoe is the closest Nike has come to delivering a truly barefoot experience for optimal foot strengthening and flexibility.Ball-to-Heel offset = 4mm differential heel to forefoot drop: The lower the number,the closer to to ground you are and the more it stretches your Achilles tendon. This helps you run more naturally and barefoot-like.The Nike Free 3.0 v4 is ideal if you’re a runner who wants the strengthening benefits of barefoot training,but you don’t want to sacrifice the underfoot protection or multi-surface traction of footwear.