A fully knitted upper is engineered to provide flex zones in the forefoot and support through the side panels. This unique upper delivers a sock-like fit with breathability for maximum comfort. Pumas unique PU foam formula offers high rebound and ultimate comfort. ForEverFoam is integrated in the heel to provide durability for long-lasting performance.UpperThe knitted upper provides a sock-like slip on construction and the engineered Air zones offer breathability.Engineered flex zones offer flexibility and comfort in the forefoot.MidsolePumas unique PU IGNITE foam formula offers high rebound and ultimate comfort while chevron flex grooves in midsole are designed to compress during landing and rebound to provide energy return. ForEverFoam is integrated in the heel to provide durability for long-lasting performance.OutsoleForefoot flex grooves allow for a smoother transition and a smoother toe-off, while the deep guidance groove runs from heel to toe mimicking the natural gait pattern, offering a fluid ride.