Designed as an up-tempo shoe, it's quickly proven to be much more. The Endorphin Speed 5 is equally capable during long, moderate training sessions and sprints to the finish. Product Details: Speed engineeredNew lightweight engineered mesh for an even more comfortable fit, perfect for fast-paced runs and daily wear. Optimised outsoleReconfigured outsole with expanded coverage in the heel for greater durability during your quickest strides. Full length groove to enhance the natural cycle of your gait. Snappy rideA full-length semi-rigid nylon plate between two layers of responsive PWRRUN PB foam, giving you a perfect balance of propulsion and cushioning for every stride. Natural flowFull-length groove enhances your gait cycle, giving you a smoother transition from foot strike to push-off. Weight per shoe: Men's 8.3oz (237g) Cushioning: PWRRUN PB Offset: 8mm (36mm/28mm) Width: Standard Race day / high performance Semi-rigid nylon plate SPEEDROLL technology Support: Neutral Product Name: Saucony Endorphin Speed 5 Mens Running Shoes - White/Mutant Saucony Code: S21007-97 Option: UK Size 7 | US 8 | EU 41, UK Size 7.5 | US 8.5 | EU 42, UK Size 8 | US 9 | EU 42.5, UK Size 8.5 | US 9.5 | EU 43, UK Size 9 | US 10 | EU 44, UK Size 9.5 | US 10.5 | EU 44.5, UK Size 10 | US 11 | EU 45, UK Size 10.5 | US 11.5 | EU 46, UK Size 11 | US 12 | EU 46.5, UK Size 11.5 | US 12.5 | EU 47