These running shoes are built for race day training. With a minimal upper, comfortable feel, and snappy midsole you can stay focused on speed. Design: Minimal upper construction with dynamic Leno weave stretch provides ultimate fit and lockdown for race day Speed trainer has slightly more structure in the upper for lightweight comfort In-Shoe Comfort: Lightweight and responsive midsole foam with high energy-return when you need it most Injected midsole plate is less stiff than carbon but still provides a snappy underfoot feel for speed days and workouts Durability & Traction: Light, durable rubber outsole Additional Details: Best for: Race training, up-tempo days & track workouts with a light, fast feel Weather: Any climate, dry conditions Weight: 8.8 oz. Offset: 8mm