SMOOTH TRANSITIONS. LIGHTWEIGHT STABILITY.
Lighter and stronger than the previous version, the Nike Air Zoom Structure 21 Men's Running Shoe provides the stability and support that made it a favourite. Softer, lightweight Flymesh material helps keep your feet cool, while responsive Nike Zoom Air cushioning in the forefoot gives you a snappy, springy feeling underfoot.
The one-piece Flymesh fabric provides more ventilation across the top of your foot. This version of Flymesh has lighter materials that still provide strong support.
Secure Feel and Support
Combining Flywire with an internal arch band, Dynamic Fit technology provides stability that adapts to you. The top two eyelets are Flywire—strong yet ultralight cables that work with the laces to provide more support as you tighten them. Plus, an elastic band wraps around your arch to help keep your foot from sliding as you run.
A wide, flat outsole and two types of cushioning offer stability. Firmer foam cushions the arch side of the foot, while a softer foam cushions the outer side. This creates the right amount of impact protection and stability for your stride.
- Forefoot Nike Zoom Air cushioning provides a responsive, springy step
- Firm heel structure provides support
- Rubber strip along the bottom of the shoe provides a smooth heel-to-toe step
- Honeycomb-shaped outsole pattern for traction
- Weight: 295g approx. (men's size 9)
- Offset: 10mm
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- Size Guide
Nike Men's Running Shoe Size Chart UK 5 5.5 6 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 US 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 Euro 38 38.5 39 40 40.5 41 42 42.5 43 44 44.5 45 45.5 46 46.5 47.5
- Delivery and Returns
METHOD TIME COST SERVICE SPRINT Next working day FREE on orders over £100
(£6 for orders up to £100)
RUN 2-3 working days FREE on orders over £50
(£3 for orders up to £50)
CLICK & COLLECT (Glasgow) 1-2 Working days FREE SATURDAY DELIVERY 1 working day £12 Royal Mail
Orders received before 2pm (Monday-Friday) are processed on the same day - after 2pm orders will be processed on the next working day.
Click & Collect
Collect your order in person from the achilles heel Glasgow running shop. Orders placed before 2pm will be available for collection on the next working day; orders placed after 2pm will be available for collection in 2 working days. Orders placed over the weekend will be available for collection on the Tuesday.
As soon as your order is ready for collection we will email to let you know. When you collect your order please ensure you bring your order confirmation & identification.
We'll package and post your order to most locations across the world as quickly as we can - for full details of delivery charges for international orders check our delivery charges page.
Spend £200+ and get FREE EU delivery.
At achilles heel we aim to please, so if you're not completely satisfied with your order, we'll do whatever we can to make it better. Items can be returned for free for an exchange or a refund within 28 days of purchase - we offer free & easy tracked returns via Royal Mail, for full details please check our returns page.
It can be hard to get things right so we are giving 28 days from Christmas Day to return your gifts on all orders made during November and December. Our returns policy will revert to the standard 28-day period for items purchased after December 31st.