Design: Lace knit upper for improved breathability In-Shoe Comfort: Symmetrical bed of cushion without additional prescriptive technologies, designed to provide the support you want and nothing you don't Low-profile cushion bed that keeps your foot closer to the ground, and utilizes a firmer material designed to provide an efficient push-off Traction & Durability: Carbon fiber plate delivers an even snappier, more responsive ride than its predecessor 4-pin Pebax(R) spike plate Additional Details: Weight 3.7 oz Neutral stability Responsive cushion Hell-to-toe drop 4 mm Designed for 3K - 10K events