Ideal for: competition/tempo run Cushioning: PWRRUN PB Drop: 8 mm (36/28 mm) Surface: Asphalt Distance: 10K Half Marathon Marathon Insole: SRS Technologies: The SPEEDROLL technology offers propulsion and forward foot motion without extra effort. The energy-saving PWRRUN PB technology provides dynamic and responsive cushioning. The design is improved with a technical mesh and integrated upper for a perfect and secure fit. Try our new SRS (Super Responsive Sockliner). We dare you not to bounce. WINGED, FLUTED TPU: Redesigned plate - Vertical reinforcement to add torsional rigidity while maintaining forefoot flexibility. Weight: 206g