| Gender | Men , Women |
| Weight | 238 (44) |
| Drop | 6 mm |
| Cushion | soft |
| Runner weight | Light , Medium |
| Running gait | Neutral |
| Surface | Road |
| Use | training |
| Pace | Low , Medium |
| Foot | Normal feet |
| Strike | Forefoot |
| Year | 2015 |
The new version of this Nike Free 4.0 model maintains a 6mm difference between heel and forefoot height and a weight of 238 grams for a 44 foot. Because of this, the Nike Free 4.0 Flyknit shoe brings you closer to the ground for a more natural feel, while offering an optimal combination of cushioning and support.
You might be interested in: Buy Nike Free 4.0
A shoe designed for runners with a neutral stride and a rather light to medium build who want to train at medium paces above 4:30 minutes/kilometer. Minimalist cushioning requires forefoot and midfoot support when running.
The sole features new hexagonal flex grooves to allow a more natural movement of the foot in all directions. In addition, secondary cuts intersect with the aforementioned grooves to provide even greater flexibility.
The Flyknit upper features a one-piece, seamless, polyester construction, offering lighter support and an anatomical fit that's hard to beat. Flywire 'cables' embroidered on the upper wrap around the midfoot to contribute to extra support where it's needed most.
The heel mimics the shape of the foot to create a more natural strike zone and a more cushioned ride. In addition, the stiff embroidered heel adds structure and support to the Nike Free 4.0 Flyknit shoe.
Its discreet insole adapts to the curvature of the foot for greater support and comfort, while the Nike Flyknit tongue has a series of grids to insert the foot more easily. Moreover, its asymmetrical lacing system reduces lacing pressure on the top of the foot.
Nike Flyknit technology was developed based on feedback from runners looking for a shoe with a snug fit and the closest feel to wearing a sock on the foot when running.
From that point on, the U.S. company embarked on a project to create a technology that would help build an upper with static properties that would provide structure and durability. Years later, support, breathability and flexibility were improved, all in a single layer. The result is a very lightweight, snug and almost libre upper.