The Puma Forever Run NITRO™ Men's Running Shoes in Vapor Gray-Fizzy Apple-Nitro Blue (Model 37775727) are engineered for runners seeking superior support and comfort. With NITRO™ technology, these shoes offer a soft core and firmer rim in the midsole, ensuring responsive cushioning without sacrificing stability. The asymmetrical heel counter and RUNGUIDE firm density guide rail keep your foot aligned, perfect for overpronators. The PUMAGRIP outsole provides all-surface traction, while the 85% energy return promotes efficient, everyday running. If you're a frequent runner, the Forever Run NITRO™ is the ideal combination of comfort, support, and durability.