All Natural MovementThe Nike Free outsole has laser-siped flex
grooves, which release stiffness in the
foam and allow it to move as naturally
as the foot does.
Barefoot-Like FeelIt’s not just the minimal design and breathable upper
materials—Nike Free is shaped to the anatomy of
the foot so it fits like a second skin and feels like a
natural extension of your body.
Fine-Tuned FlexibilityFrom top to bottom, flexible materials
make it easy for the foot to move every
way it needs to.
The Nature and Science of Nike Free
Tobie Hatfield, Athlete Innovation Director and Eric Avar, VP of Innovation
conducted an exhaustive series of measurements to learn how the bare foot
behaved while running. It was one of the first studies of its kind, and it gave
them the data they needed to officially begin design on the first Nike Free.
Nike Free hits the same barefoot
benchmarks first measured in the lab:
balanced heel-to-toe pressure gradients,
a 33-degree toe-off angle, and a more
neutral pronation pattern.
Once the study of barefoot running was
complete, the team got started on the
initial designs. The mission was clear:
Set the 52 muscles of the feet free.
They can get any shoes
they want, and they want
to run barefoot!”Tobie Hatfield, one of the designers of the first Nike
Free, after observing an elite track and field team
Nike Free resembles the pressure profile
of the bare foot much more closely than
Nike Free Scale
Nike Free always helps enhance your body’s natural motion, but
the barefoot-like-running experiences vary from shoe to shoe. These
variances are graded on the Free Scale. The lower the number,
the more barefoot-like the shoe.
Explore Other Nike InnovationsSee how Nike products adapt to and enable astonishing athletic feats.