You’re going to want to start sprinting from the moment you lace up the Brooks Hyperion 2. This speedy shoe’s light and springy cushion packs a punch with every stride, and its breathable upper keeps your feet cool and locked in for versatile performance whether you’re racing or training. Details: Upper: The lightweight, breathable mesh upper keeps your feet cool and secure during intense workouts. Midsole: Nitrogen-infused DNA FLASH v2 foam delivers an energetic rebound that's nearly 10% more responsive than before to help you run fast. This soft yet bouncy cushioning protects your legs from impact while propelling you forward during hard efforts. Outsole: RoadTack Rubber is made with recycled materials and offers lightweight durability and rebound.