Unisex spike based on men's sizing. For women, order 1.5 sizes down (ex. for a women's 8.5, order a unsiex 7.0) Like hitting fast-forward. The adidas Adizero Avanti shoes reduce fatigue, so you finish 5K and 10K races with a kick. Adidastook two top technologies from theirroad racers and retooled them for the track. A layer of Lightstrike Pro above the spike plate offers maximum cushioning while ENERGYRODS provide a snappy, propulsive ride with high traction. Regular fit Lace closure Textile upper ENERGYRODS limit energy loss Lightstrike Pro cushioning Weight 6 ounces (size 9) Midsole drop: 8 mm (heel: 27 mm / forefoot: 19 mm) Synthetic outsole with spike plate 25% of the components used to make the upper are made with a minimum of 50% recycled content Unisex adidas Adizero Avanti TYO