Shoe Uppers Covered Yarn

Supply Ability

Supply Ability     10000 Kilogram/Kilograms per Month

Packaging & Delivery

Packaging Details   65cm*45cm*36cm also can with pallets

Lead Time:

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Our yarn can be used for leggings, silk socks, denim, bra, socks, underwear, ribbons, elastic tapes, gloves, shoe uppers, and so on.

1Q: what is the fly knit technology?

A: It's called Flywire, a revolutionary technology that uses high-strength thin wires, like the steel cables of a suspension bridge, positioned precisely where the foot needs to be supported. By relying on Flywire, Nike can design the lightest and most durable sneakers ever, revolutionizing the way shoes are made by reducing the amount of material needed for the upper to the level of a bare foot. Thanks to this innovative technology, trail spikes using Flywire can now weigh less than 100 grams, which is unprecedented without losing the durability, integrity, and support of a running shoe. Six and a half years ago, Jay Meschter, the founder of Flywire shoes and the director of innovation at Nike's Innovation Kitchen, had only a last on his hand, a mold that was filled with pins and threads that held up the foot. This model looks like 1970s string art, but it harbines unknown possibilities. It is this simple product idea that holds the potential to revolutionize the way shoes are made. The engineered fibers are arranged at specific points to form the skeleton or support bracket of the athletic shoe, thus keeping the foot stable in place. This approach overturns the assumptions of sneaker manufacturing: add more elements to the shoe for more support. Innovation Kitchens fully understood the potential of new products, but lacked an easy or economical way to turn innovative ideas into actual products. The project was shelved until Jay and his design team finally discovered the machines and processes that could make the technology a reality.

2Q: How does it develop?

A: By sewing directly through the vamp (rather than using a large jump stitch), the side trim is no longer effective. Long stitches mean the vamp structure is made up entirely of thin threads. Flywire dramatically reduces the weight of sneakers, heralding the end of a shoe-making era that used multiple layers of fabric to provide support, which only added weight and reduced elasticity.

Early in the process, the design team began collaborating with biomechanics experts at the Nike Sports Research Laboratory (NSRL). They put duct tape on the designer's feet. Jeff Pisciotta, a researcher at Nike's Sports Research Lab, is fascinated by the idea of creating additional ligaments to promote foot movement. Ligaments guide the joint in the right direction. "We tape the foot from the bottom to the heel to provide stability on the side of the foot," he explains. Using this method and some anatomical principles, we were able to design Flywire fibers in the right place."

The precise distribution of Flywire ligaments means that the upper acts like a second skin. The fabric just keeps rocks and dirt out, and all the support is provided by thin threads. The new sneakers could solve a persistent problem: foot slippage.

When people walk or run in shoes, foot slippage occurs with every step. It's just a millimeter of slip, but it adds up over the course of the race. In terms of a metre's stride, that's a full metre off after 1,000 metres -- and the difference between first and third place is often less than a metre, so that's not to be sneezed at.