Brooks Glycerin 6 has been known to elevate the running experience for neutral runners and mild overpronators. But the new Glycerin 6 manufactured with two layers of MoGo stacked in the heel and e-fusion sandwiched in between takes already incredible cushioning and resiliency to a whole new level. Hydro Flow in the heel and forefoot shoot the ride in comfort. We recommend buying half sizes larger than you street shoe size.