Nike has put together the ultimate running shoe. The Nike Flyknit Trainer ($150) was made based on information from the best marathon runners. The shoe features a virtually seamless knit upper, that provides a breathable, snug fit. The one-piece upper moves with your foot and integrates support and stretch without the additional weight of overlays. The Nike Flyknit Trainer also offers low-profile, responsive cushioning. If you’re looking for a shoe that is barely there and can go the distance, The Nike Flyknit is it.