Train your brain is the idea behind the new Nike SPARQ Vapor Strobe Eyewear, smart sports training gear that uses liquid crystal technology to strobe the lenses between clear and blocked. For the periods when you can’t see, you are forced to visualize and use other awarenesses and senses to anticipate what’s coming, in the sport of your choice. The strobe rate is variable for different training effects. Includes microfiber case and USB charging cable. (SPARQ stands for Speed, Power, Agility, Reaction and Quickness, a training measurement system, in case you were wondering.)