When we first saw the Nike HyperAdapt trainers we had a burning curiosity about how they worked. How do you make a shoe that dynamically changes the tension on the laces? TribeMind have found the answers with an excellent teardown. It turns out that in the heel is a well concealed motor unit with inductive charging, together with a pressure sensor to confirm the presence of a foot.
The motor unit removed from the shoe, showing that the battery is the largest component