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Nike zoom structure 21 wide.
Our wide selection is eligible for free shipping and free returns.
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Nike women s air zoom structure 21 running shoe.
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The structure 21 uses a strapping system or the internal arch band in nike speak which was also used on the 20.
Nike women s running shoes.
4 6 out of 5 stars 121.
An inner sleeve is attached to the tongue so the arch band strap is sandwiched between the outer upper and the inner sleeve.