Why It’s Awesome
STRESS REDUCTION: The Bio-Logic™ midsole is tuned to maximize the impact reduction, minimize the rapid side-to-side stresses, AND minimize the stress underfoot that comes with running at faster paces.
COMFORT: Wide toe box, Breathable upper, Molded foam heel counter, Sculpted footbed.
FEEL: Ample cushion in heel and midfoot smoothly transitions to a firmer forefoot that provides a stable and solid fondation for push-off.
z40 Design Notes
ENGINEERING SPECS: Faster adult ranges for cadence and pace.
CUSHIONING: A higher cadence reduces the impact force, allowing the heel to be slightly firmer than the Z50 without reducing stress reduction. The heel also has a specific rocker shape to ease the foot into the stride as smoothly as possible.
STABILITY: The purpose of pace-tuning is to maintain the best balance between forefoot and heel so that underfoot stress is minimized along with the vertical and side-to-side stresses. This is the genius of Vimazi. No compromise.
DROP: The Z40 drop is 5mm, which allows us to make the softer heel without the risk of additional strain under the foot. A lower drop than 5mm would require a firmer heel to properly protect the foot.
SOLE DESIGN: Heel and forefoot rockers work together with the ankle and ball-of-foot joints to further slow the kinds of accelerations that can cause damage.
MIDSOLE MATERIAL: Vimazi Z-Foam is made from an EVA (ethylene vinyl acetate) base with additives to increase abrasion resistance and longevity. Most importantly, however, we use Z-foam because it allows us to dial in an ideal compression set for each model. This isn’t possible using other common midsole foams. Our midsole formulas are the heart of the technology. Many brands falsely claim that their foams help improve running economy. Such claims betray an ignorance of the fundamental mechanics of running with muscle-powered jointed legs.
