• Double up on cushioning: PWRRUN PB gives you max energy return while a contoured PWRRUN Support Frame provides seamless support. A faster, smoother stride: PWRRUN Frame supports your foot upon landing and its curved shape propels you to a snappy takeof. Unbeatable fit: With deeper contouring into the midsole, you sit into the shoe, instead of on top of it, for an incredibly personalized and supportive fit. Lighter Footprint: This style is vegan and contains recycled upper materials.