Here's the latest set of images of Nike's Flyknit Chukka Trainer FSB. Synthetic wool has been incorporated into both the upper and inner liner to help provide added protection from cold temperatures. The outsole inspired by the Nike Free is also water-resistant and highly visible at night. A USA tongue pull alongside the custom Stars and Stripes liners finishes off the patriotic look. The kicks will be released February 7 at a retail cost of $200.