Rubber sole
With a softer, lighter PWRRUN formula and more midsole beveling, you get a thicker stack of cushioning and an incredibly smooth ride from heel to toe.
HOLLOW-TECH gives you the underfoot support you need, but in a lightweight and minimalistic way.
By carving out the midsole and creating a deeper foot bed, you sit into the shoe, instead of on top of it, for an incredibly supportive fit.