The Saucony Endorphin Speed 4 are ideal for runners looking to improve their performance with each stride. Designed for daily and speed training, they offer a perfect combination of cushioning and energy return. Surface: Asphalt. Shoe type: Neutral. Use: Training, Speed training. Weight: 233g. Drop: 8mm (36mm/28mm). Plate: Curved nylon chassis. Damping: PWRRUN PB. Ideal for: competition/tempo run. Technologies: The SPEEDROLL technology offers propulsion and forward foot motion without extra effort. PWRRUN PB technology provides dynamic and responsive cushioning. Improved design with technical mesh and integrated upper for a perfect and secure fit. SRS (Super Responsive Sockliner) for a bouncy feel. WINGED, FLUTED TPU: Redesigned plate for torsional rigidity while maintaining forefoot flexibility. Weight: 236g.