The GEL-QUANTUM 90 IV sneaker merges performance-inspired technologies with street style aesthetics. It has the comfort you need to keep your mind and body in-tune throughout the day.​ This shoe's upper is modified with a seamless no-sew construction that makes it softer, more flexible, and ventilated for various scenarios.​ The update midsole halos our other designs in the GEL-QUANTUM collection. It features a full-length AMPLIFOAM cushioning system and Scutoid GEL technology for improved everyday comfort.