Black Flyknit Slip On Trainer. A classic slip-on trainer, our Aire Flyknit trainer boasts a pull-on loop and metallic back accent, making it a timeless, effortless addition to any outfit.Upper, Lining, Sock & Sole: Other Materials Available in: Black 4.49 14 True Shoes & Boots 5.99 5.99 Aire Black Slip On Trainers by Linzi | Look Again