Designed originally as a race day shoe, the Saucony Womens Endorphin Speed 4 in White Sunny has become a beloved tempo runner. These fast trainers are capable of everything from long distance cruises to achieving personal bests and races. The Saucony Womens Endorphin Speed 4 blends three powerful elements in the midsole to provide a perfect feeling of propulsion and cushioning. PWRRUN PB is a peba based foam that offers a bouncy, lightweight feel, harnessed by a winged nylon plate offering flexibility through the forefoot, but firmness vertically. Lastly, Speedroll technology gives a smooth transition from landing to toe off, for a stride that feels easier. Weight: 206g. Stack height: 36-28mm. Offset: 8mm. Sustainability: This style is vegan and contains recycled materials. Features smooth SPEEDROLL technology for effortless speed and forward motion. PWRRUN PB foam provides a 'just right' feeling - firm enough to propel, soft enough to cushion. The re-engineered winged nylon plate offers vertical reinforcement while maintaining forefoot flexibility. Ideal for: competition/tempo run. Cushioning: PWRRUN PB. Drop: 8mm (36/28mm). Surface: Asphalt. Distance: 10K, Half Marathon, Marathon. Sockliner: SRS. Technologies: SPEEDROLL technology offers propulsion and forward foot motion without extra effort. Energy-efficient PWRRUN PB technology allows for dynamic and responsive cushioning. The design is improved with engineered mesh and an integrated upper for a perfect, secure fit. Try our new SRS (Super Responsive Sockliner). WINGED, FLUTED TPU: Redesigned plate - Vertical reinforcement to add torsional rigidity while maintaining forefoot flexibility.