An entry-level spike engineered with more cushioning and midsole foam than our elite spikes, the Crescendo MD is built for speed with the same 6-pin spike plate and bouncy stack height as its predecessor but with a bold new race-ready single-layer mesh upper. Engineered with the thickest stack height you'll see on the track; this beginner-friendly spinoff is bound to turn heads on the starting line whether racing your first 4x400 or two-miler. Features. Breathable air mesh. Anatomical tongue construction. Compression molded EVA. Six-pin spike plate. Vegan.