Karhu Men's Fusion 4.0 HiVo Running Shoe Baselayers ensuring your foot remains secure

ensuring your foot remains secure and comfortable in the proper position during runs

PWRRUN foam provides more cushion

*Only MP3 mode can be used underwater because water blocks Bluetooth signals

Toe the line and take on the competition

during and after any run

Karhu Men's Fusion 4.0 HiVo Running Shoe Baselayers ensuring your foot remains secureThe KARHU Fusion 4. 0 HiVo provides a plush and propulsive ride ideal for the neutral runner. New additions and adjustments to the Fusion 4. 0 make this shoe exceptional at seamlessly accelerating the transition from heel to toe off, ensuring a responsive underfoot experience regardless of pace. This update utilizes soft IdealKnit mesh for improved breathability and comfort. Most notable is the incorporation of new nitrogen injected AeroFoam in the