It seems Nike has pushed the idea of the "sock-like upper" even further with the latest unveil of the Nike Free Hyperfeel Launch and the inevitable Free Flyknit.
Both releases employ Nike's Flyknit technology to add a performance advantage to the technical runners. The Hyperfeel's sole looks like that of a lightweight runner with a waffle-inspired outsole and a low profile.
Stay tuned as Nike continues to unveil this and other technologies today.
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