Nike welcomed the first VaporMax sneaker into the world in 2017, and since then, the brand has focused on making subtle but impactful improvements to its VaporMax line. The Nike Air VaporMax 2021 FK Wolf Grey White Volt is one of the many VaporMax sneakers to showcase the changes that have been made to the VaporMax collection. The upper on this Nike Air VaporMax 2021 sneaker is made out of Flyknit materials that provide comfort and support while making the shoe lightweight and breathable. It also has a series of Air units that run along the bottom of the sneaker and form one big air bubble to deliver superior cushioning. But according to our experts, the coolest part of this sneaker is that it's constructed out of at least 40% recycled materials. This includes the Nike Grind materials used to bring the outsole of the sneaker together. The Nike Air VaporMax 2021 FK Wolf Grey White Volt was released on November 11, 2021, when it retailed for $200.