FuelCell foam delivers a propulsive feel to help drive you forward Lightweight engineered knit upper with no-sew overlays Gusseted tongue designed for a sleek fit Lace-up closure for a secure fit 6 mm drop; due to variances created during the development and manufacturing processes, all references to 6 mm drop are approximate New Balance FuelCell combines speed and cushioning for a fast, lightweight ride. These men's running shoes are designed with an engineered knit upper for structure and high-rebound FuelCell technology for underfoot propulsion. ✨️NWOT ✨️, no box