4x waist storage pockets for nutrition or accessories
The outer short has a relaxed fit and a secure pocket
100% recycled breathable mesh lining
Based on scientific findings that suggest better tissue relaxation and recovery reform from lower vibration frequencies
If the difference is between sizes
Saucony Endorphin Speed 5 Shoe Size:10 4x waist storage pockets forThe new Saucony Endorphin Speed 5 has arrivedfaster, smoother, and more refined than ever. Still built for speed day and race day, it now features a reengineered mesh upper for an improved fit, plus a redesigned outsole for greater durability and smoother transitions. With its trusted trio of SPEEDROLL technology, PWRRUN PB cushioning, and a semi rigid winged nylon plate, the Speed 5 strikes that perfect balance between snap, support, and comfort.