Karhu Men's Fusion 4.0 Running Shoe Recovery An all-round road runner offering

An all-round road runner offering exceptional fit and comfort

Something for Everyone - PACE 2 is jam packed with the sport modes you've been looking for

with the fit further enhanced by the wide

Additional features include MIZUNO ENERZY foam for energy return

Sculpted by data to smooth transition

Karhu Men's Fusion 4.0 Running Shoe Recovery An all-round road runner offeringThe KARHU Fusion 4. 0 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