K-Swiss mi-Soul Shoe Technology
With miSOUL, the choice is yours, comfort and cushioning or lightweight speed -- all in one shoe. Each pair of miSOUL equipped shoes comes with two miSOUL units. The unit with an emphasis on cushioning (Practice Day) comes installed inside the shoe with the lightweight units (Game Day) contained inside the shoe box. Changing units is as easy as removing and replacing an insole on a regular tennis shoe.
Practice insole (Cushion 1.0)
Gameday insole (Light 1.0):