Comfort and sustainability come together beautifully to form the Wave Neo Ultra. Each element, from the plush sensation of the caster-oil based MIZUNO ENERZY LITE midsole to the eco-friendly undyed white upper, is designed to cushion your run and lessen impact on the environment. TECHNICAL DETAILS MIZUNO ENERZY (FOAM): Offering versatility in its application, while still maintaining softness and resilience. It will help enhance performance capabilities. MIZUNO ENERZY CORE: Delivering the most resiliency and softness. It improves comfort and adds spring to drive optimum performance. MIZUNO ENERZY LITE G3 Outsole: Outsole provides superior grip with less weight. G3-DR provides added durability in key contact points. WAVEKNIT™ Eco Friendly Materials Category: Neutral Drop: 8mm Stack Height: Forefoot 31mm / Heel 39mm Weight: 10.9 oz (size 9)