- Rubber sole
- Flyknit, single-layer mesh and synthetic upper materials
- Lace-up closure
- Padded tongue and collar
NATURALLY FLEXIBLE. The Nike Free RN Flyknit 2017 Men's Running Shoe brings the ultimate natural ride. A nearly seamless upper hugs your foot yet feels barely there, while the revolutionary outsole lets your foot move the way it's meant to. The easily packable construction lets you run freely anywhere you go.