Saucony Endorphin Speed 6 Running Shoes - Women's Vinca/Naval 5.5 Regular. Built for performance versatility the Speed 6 features a newly- designed nylon plate for enhanced propulsion and smooth transitions and a lightweight upper for a locked-in secure fit. In the Speed 6 every run feels like momentum in motion. Specifications for Saucony Endorphin Speed 6 Running Shoes - Women's: Manufacturer: Saucony Gender: Female Footwear Type: Shoes Activity: Road Running Women's Shoe Width: Regular Features of Saucony Endorphin Speed 6 Running Shoes - Women's NEWLY DESIGNED NYLON PLATE: Provides increased propulsion with faster and smoother transitions. GO-FAST UPPER: A breathable lightweight mesh keeps the foot locked when picking up the pace. Package Contents: Saucony Endorphin Speed 6 Running Shoes - Women's Saucony S101826-1006-5.5: Endorphin Speed 6 Running Shoes - Women's Vinca/Naval 5.5