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 engineered - New lightweight engineered mesh for an even more comfortable fit, perfect for fast-paced runs and daily wear. Optimised outsole - Reconfigured 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 ride - A 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 flow - Full-length groove enhances your gait cycle, giving you a smoother transition from foot strike to push-off. Weight per shoe: Women's 7.2oz (204g) 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 Womens Running Shoes - White/Navy Saucony Code: S11007-172 Option: UK Size 4 | US 6 | EU 37, UK Size 4.5 | US 6.5 | EU 37.5, UK Size 5 | US 7 | EU 38, UK Size 5.5 | US 7.5 | EU 38.5, UK Size 6 | US 8 | EU 39, UK Size 6.5 | US 8.5 | EU 40, UK Size 7 | US 9 | EU 40.5, UK Size 7.5 | US 9.5 | EU 41, UK Size 8 | US 10 | EU 42