These high jump shoes also have the combination of 11 spikes and a sharkskin outsole for superior traction engineered with boost technology these shoes offer responsive cushioning that offers superior comfort and endless energy features integrated boost cushioning comfortable textile lining eva midsole for lightweight cushioning 11 spike design sharkskin textured outsole with light weight and ultimate grip in all conditions midsole drop 05 mm heel 105 mm forefoot 10 mm white