The Nike Air VaporMax 2021 FK is made from at least 40% recycled materials. It features a breathable, comfortable silhouette made from ultra-flexible, recycled Flyknit material (and a soft collar around the ankle). A stitched-on Swoosh design trademark and recycled TPU heel pull add a touch of style as you cruise down the streets in the incredibly soft comfort of VaporMax cushioning. BenefitsOriginally designed for performance running, the revolutionary VaporMax 2 Air unit is made from recycled material and provides more cushioning than ever before.The first full-length, one-piece Air unit delivers a smooth heel-to-toe transition for incredible cushioning.The flexible, supportive Flyknit upper is made from post-industrial recycled yarn, making it breathable and lightweight like feather.It is made from at least 40% recycled material, which makes it look great and is environmentally friendly.The collar is comfortable and wraps around the ankle for a sporty look, while the padding in the heel area adds comfort.The durable and grippy outsole made of recycled rubber is the perfect complement to this model.