On recommends buying your usual size as this model fits true to size Design: Light, durable, and temperature resistant Easy step-in design Bold rocker shape In-Shoe Comfort: Soft upper and sockliner turn recycled materials into next-gen comfort Monster CloudTec® technology for massive cushioning and max energy Speedboard® provides explosive energy return Additional Details: Fits true to size Total recycled content: about 35% / Polyester: about 30% recycled Weight: 8.11 oz (230 g) Heel-toe drop: 6 mm Brand : On