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Nike Men’s Air Zoom Structure 21 Running Shoe

RRP £104.99 SAVE 10%
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Product Features

Lighter and stronger than the previous version, the Air Zoom Structure 21 from NIke is suitable for everyday training and as well as being a great looking shoe. It has been built to slow down the rate at which your foot pronates and with its new wider base, helps to promote a faster and much improved performance.  This is mainly achieved through the Dynamic Fit technology helping to ensure a smoother transition and the triple layer foam offering all the support you need.  Despite all the support and cushioning it still manages to remain as light as a feather.  Flywire technology has been updated and along with the Flymesh upper provide support and a glove like fit for your foot.


  • Dynamic Fit technology locks down the foot.
  • Engineered mesh provides targeted ventilation and support.
  • Dynamic Support system in the midsole provides a smooth transition.
  • Full inner mesh bootie wraps the foot to enhance breathability and provide a sock-like fit. Notches on each side of the tongue allow for easy on and off.
  • Compression-molded Phylon on the medial side and Cushlon foam on the lateral side are fused together to create a dual-density cushioning system.
  • Zoom Air unit in the forefoot delivers responsive, low-profile cushioning.
  • Honeycomb outsole pattern provides great multi-surface traction.

Stability shoes are designed for runners who overpronate, the majority of runners fall into this category. The initial impact will always be towards the outside of the foot. It then roll inwards to help absorb shock. As it rotates or pronates inwards, it continues beyond the neutral point usually due to having a low arch or flat feet. As the arch collapses, your foot then leans inwards, causing the rest of your lower body to be out of alignment. This can lead to pain in your ankles, shins, knees, hips and back.

The support in a Stability shoe is positioned underneath the arch on the medial side and is usually a harder, darker coloured foam compared to the rest of the midsole. This helps to offer resistance against your arch collapsing and therefore holding you in a better aligned, neutral position. Finding a shoe that supports you correctly is the tricky bit, we would always advise getting your gait properly tested, but if you would like more advice on how to self diagnose whether you need a stability shoe please visit our Gait Analysis page or send us a question.

Return Info

Our returns policy is simple. If for any reason you are not happy with your purchase we will be happy to refund or exchange it for you.

Goods must be returned in an unused, re-sellable condition and in the original, undamaged packaging. Shoe boxs must be unmarked and placed inside a postage bag when returned, otherwise charges may be incurred.

Customers have 14 days after receiving their order to return the goods. Exceptions can be arranged at Christmas or if the order is a gift, please contact our customer services team for confirmation at [email protected].

To view our full returns policy click here.

Nike Men’s Shoe Size Chart

The following size chart is a guide to Nike Men's shoe size with a comparison to European and US shoe sizes.

UK 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13
US 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14
EU 41 42 42.5 43 44 44.5 45 45.5 46 47 47.5 48 48.5
cm 26 26.5 27 27.5 28 28.5 29 29.5 30 30.5 31 31.5 32

Please note that the onus is on the customer to choose the correct size and that all size charts are a suggested guide to measurements based on information supplied from the manafacturer.

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