The Nike Men's Free Flyknit Chukka PR QS Sneakers, seen here in green. Nike combine their innovative Flyknit uppers with a full Free sole unit for a lightweight and comfortable sneaker. Providing both technical performance and bold design, these sneakers are produced in a striking contrast neon colourway. - Flyknit fabric uppers - Flexible and comfortable Free sole unit - Lace-up closures - Woven heel-pull - Nike branding Made from fabric and rubber.