The ASICS Novablast 4 in "Black / Blue Expanse" is a high-performance daily trainer engineered with a unique geometric midsole that delivers a signature, trampoline-like bounce for an energized running experience. This model features full-length FF BLAST™ PLUS ECO cushioning-crafted from approximately 20% bio-based materials-to provide a softer, more responsive ride while supporting sustainability goals. For a premium fit, the shoe is constructed with an engineered woven upper that offers advanced stretch and breathability, complemented by a gusseted tongue wing system to reduce tongue sliding and a durable AHAR™ outsole for enhanced grip on road surfaces.