Running isn't about winning a race; it's about finding your limit and challenging it every time you step out to run. Fuel your drive to improve with the PUMA Foreverrun. Equipped with a RUNGUIDE SYSTEM, these runners are here to redefine the limits of speed and endurance. Building up the pace and clocking up the miles just got easier with the newly developed NITRO midsole that has two different densities – an industry first. The engineered mesh upper fuses with an asymmetrical heel counter to hold your foot in place as you dial up the speed. And it gets better! The outsole design optimizes the overall pronation control, including a wider medial rubber segment to stabilize last-stage pronation. There's no room for error; be the best you know you can be with the PUMA Foreverrun. PUMA Foreverrun features: Two densities of NITRO technology provide superior responsiveness and cushioning in a lightweight package. RUNGUIDE SYSTEM: a combination of geometry, foam densities, and supportive features improves alignment and keeps the foot centered through each stride. PWRTAPE delivers targeted reinforcement for upper durability and internal reinforcement.