Nike Women’s ReactX Infinity Run FK4 Sz 10.5 NEW. Barely Volt /White / Obsidian/ Aquarius Blue. Item is NEW in box with no lid. Lid was removed by manufacturer. Maximum cushioning provides elevated comfort for everyday runs. Experience a soft, rocker-shaped platform made with new React foam underfoot and an ultra-comfortable collar and tongue for a snug feel. Plus, a water-resistant membrane was added to this version to help keep you dry. Key Features • Updated Flyknit upper and a water-resistant membrane help keep you dry • New ReactX foam in the midsole for extra cushioning • Waffle outsole for durable traction on the roads • Ultra-comfortable collar and tongue for a soft, snug fit • What's New? New Reactx cushioning for even more comfort and a revamped upper and wider toe box.