A kid's-specific last and a sockliner size checker helps to accommodate growing feet

The garment's reflective details improve visibility

It includes lower back pockets for you to store everything that you need during the race

The men's Cascadia 18 is a mountain trail-running shoe

Designed to be flexible and agile

Unisex Nike Zoom Rival XC 6 US Men's Size (Women's):9.0 (10.5) A kid's-specific last and aToeing the cross country starting line for the 1st time? Chasing a personal best after years of racing the field and the clock? Run down your goals and your opponents in the Zoom Rival 6. The mesh upper keeps you comfortable through the tape while the midsole helps keep you stable during those long, gruelling mid race miles in any condition.