Who even knew that Knitting Industry News existed? But it’s a real publication, apparently, or at least a website, and it has a new article about Nike figuring out how to knit a shoe upper. Shoes are normally assembled from elements of several materials, but for this shoe, the whole top is knitted in one flat, weirdly-shaped piece. No cutting and pasting required. A single finished Nike Flyknit Racer weighs 5.6 ounces–about as much as a banana. According to Nike, the shoe will be appearing in the Olympic marathons this summer.