The Nike Air VaporMax 2021 FK is all about comfort. Its super stretchy Flyknit upper is breathable and lightweight while a soft seamless collar sculpts your ankle for a sporty look. Heel-to-toe VaporMax cushioning underfoot helps put a bounce in your step, and a stitched-on Swoosh logo and plastic heel clip add a splash of futuristic style. Supportive Flyknit upper is made from stretchy yarns and creates a striking visual that's seamless, breathable and feels light on the foot. Full-length VaporMax Air unit was the 1st Air unit to run the entire length of a shoe. It allows for smoother transitions and adds plush cushioning. Seamless collar sculpts the ankle for a sporty look that feels great while padding on heel adds to the comfort. Webbing eyelets add a modern look. Rubber on the outsole adds durability and traction. Speckles on the outsole are made from Nike Grind, which is recycled waste (i.e., the scraps) from the footwear manufacturing process.