Nike Zoom Rival 6 Track & Field Distance Spikes Toeing the starting line for the 1st time? Chasing a personal record after years of racing the field and the clock? Run down your goals and your opponents in the Zoom Rival 6. Newly implemented. full-length ZoomX foam adds consistent burst to your stride. The mesh upper keeps you comfortable through the tape while the midsole helps keep you stable during those long. grueling mid-race miles in any condition. Speedy Return Full-length ZoomX foam optimizes resiliency and energy return while staying lightweight. Weather Ready Full-length Waffle outsole pattern grips various surfaces and terrain. Run the Distance Soft and slightly stretchy mesh helps keep you comfortably going for miles. Thin speed laces have a knit-in texture that helps keep knots more secure than traditional laces. Lugs around the outsole help enhance grip in multiple conditions.