Ideal for: competition Cushioning: PWRRUN HG/PWRRUN PBSurface: AsphaltInsole: SRS Drop: 8 mm (39.5/31.5 mm)Distance: 10K Half Marathon MarathonTechnology: S-Curved Carbon: A carbon plate allows for a smoother and more dynamic foot roll 8mm Offset PWRRUN PB/ PWRRUN HG: Unleash your full potential with PWRRUN PB cushioning. This innovative foam offers higher energy return and improves the efficiency of your stride. SRS: Try our new SRS (Super Responsive Sockliner). We dare you not to bounce FORMFIT: Get a personalized fit with Saucony's FORMFIT technology. The shoe adapts to the unique shape of your foot SPEEDROLL: Provides propulsion and forward momentum Weight: 185g