** REMOVABLE INSOLES ** The GEL-PULSE™ 12 MK running shoe offers excellent cushioning and comfort. This version features a knit upper for a lifestyle appeal while offering excellent breathability. The fit around the heel and over the top of the foot has been softened for a better feel that helps feet stay comfortable. This not only adds to the shoe's comfort, but also gives the latest GEL-PULSE™ 12 a cleaner look. Underfoot, the AMPLIFOAM™ midsole cushioning and our rearfoot GEL® technology cushioning system work in tandem, adding softness and helping the shoe absorb more shock in your step. With its contemporary technologies and styling, the GEL-PULSE™ 12 MK shoe helps you to take on whatever the day brings in comfort.