These are the fibers located in the upper shoes that constrict the movement of the legs. This provides maximum support, stability, and is also to reduce the weight of shoes.
It works on the principle of air cushions located at the midsole and insole. When došlapu the compressed air cushion and reduce shock at his feet hit the ground. After došlapu the air cushion will return to its original shape. It is more durable than cushioning systems based foam.
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