ENDORPHIN SPEED 4 Size:42 The Inner Spark collection represents

The Inner Spark collection represents conquering inner battles

photographié par Wendy Huynh

involving New York City athletes and Japanese engineering

It must be both efficient and comfortable

which is shatterproof

ENDORPHIN SPEED 4 Size:42 The Inner Spark collection representsSPEEDROLL technology provides propulsion and forward movement of the foot without additional effort. Energy efficient PWRRUN PB technology provides dynamic, responsive cushioning. The design is enhanced with engineered mesh and an integrated upper for a snug, secure fit. Try our new SRS (Super Responsive Sockliner). We dare you not to bounce back. Redesigned Plate Vertical reinforcement to add torsional rigidity, while maintaining flexibility in the