The New Balance Fresh Foam X 860v15 Running Shoes are a cornerstone stability trainer, redesigned to provide reliable support without the stiff, intrusive feel of traditional medial posts. This version introduces Stability Plane technology, an innovative EVA plate sandwiched between two layers of Fresh Foam X that guides your foot's natural motion path. Combined with a new, more aggressive rocker profile and a lower 6mm drop, the 860v15 offers a smoother, more energetic transition that keeps you stable and comfortable through high-mileage training weeks.