Features - Anatomical toe box - Ultra lightweight Hyperweave breathable construction -100% Pebax® supercritical foam -Locking laces for a secure fit -Molded sockliner for comfort and support -Lockdown reinforcement paneling for security and stability -Gusseted tongue to prevent shifting -6mm heel-to-toe drop -Stack Height: 39.5mm(heel) 33.5mm(forefoot) -7.8oz (men's size 9) Used once for a demo about 5 miles on them