The Flyknit Trainer Chukka SFB first made its debut at the Sochi Winter Olympics last year and launched some months later to much fanfare. It quickly became a cold weather favorite among sneaker lovers and was given a handsome makeover with the ACG edition, which was arguably one of the coolest releases of 2014. Winter seems to be sticking around longer than usual and lucky for us, Nike has decided to release some new colorways of the popular silhouette. Drawing inspiration from the original Nike Special Field Boot, the new design features a reinforced heel and rugged outsole for increased traction. The NikeLab Flyknit Trainer Chukka SFB in red and turquoise will be available online and at select NikeLab destinations worldwide starting tomorrow, March 5. Take a look below.