Whether you're logging miles or tackling errands, the Karhu Synchron 2.5 gives you the perfect combination of softness, stability and style. This premium daily trainer serves up a plush stack of AeroFoam Nova cushioning with a Stingray Fulcrum that rolls you through your stride for easy running and all-day comfort. Details: Upper: The sleek IdealKnit mesh upper, reinforced with glue print overlays, offers a modern aesthetic and snug midfoot fit, while the roomy toe box keeps you comfortable. A soft heel collar adds to the premium feel and instant step-in comfort. Midsole: The external Stingray Fulcrum and generous stack of AeroFoam Nova cushioning create a supportive platform ideal for long runs and all-day wear. Outsole: The outsole boasts improved resiliency with full rubber coverage that adds stability and protects the exposed Fulcrum.