On rare occasions, sometimes when you least expect, the desert night will come to life with awe-inspiring Aurora Borealis as far south as Arizona. The uncommon occurrence brings a new level of spectacular to the skies—and this special Book 1. The upper is fully made of a reflective-backed mesh. The lenticular Swoosh logo and collar color shift with movement. And, a glow-in-the-dark outsole adds a galactic touch to this high heat wonder.