NIKE Men's Air Zoom Structure 21 Running Shoes

Product Information

There’s plenty of room in the toe-box and forefoot and the fit is true to size. The Structure also comes in multiple widths (2E and 4E) in case the standard D width fits narrow. There are other subtle changes, all of them for the better. The upper has larger vented areas. The forefoot breathes better, and so does the rearfoot which now gets vented sections over the Flywire cords.

If our memory serves us right, the Zoom Structure 18 was the first Nike running shoe to feature Flymesh. This upper material is made of a single layer of engineered mesh and borrows aesthetics from the Flyknit. In case if you found the last year’s Structure 20’s ride to be hard on your feet, consider the list of alternatives at the end of this review. PROS AND CONS The last year’s Structure 20 was an improvement over the 19. Coming to think of it, this should be the case with each update. But given the long lead-times involved in the design and delivery of a shoe, a new model isn’t necessarily an improvement over its older version.The rearfoot rides flat because there’s nothing there except for the dual-density foam and the outsole. Though the open foam area below the heel plus the removable insole helps with the cushioning, the rearfoot is noticeably firm. Overall, the Nike Zoom Structure 20 and 21 are responsive, well-cushioned and deliver an energised ride with smooth transitions. They are engineered to meet the needs of overpronating runners with plenty of midsole foam cushioning to keep wearers stable and support the collapsing arch. Additionally, both models also accommodate users with broader feet by offering wider width sizes for buyers. The Nike Air Zoom Structure 22 is a running shoe designed for people with flat feet. It helps runners to train with appropriate support. Plantar fasciitis or flat feet problems can be treated by regular stretching but wearing a shoe that supports the arch and heel correctly is a more lasting solution and that's where the Zoom Structure 22 comes in. The product is also a good choice for anyone who trains daily with a view to covering longer distances as it its hard-wearing and offers good support over an extended period of time. Support On Hard Surfaces The Nike Structure is all about balance. The upper has smooth interiors and fits well. The inner strapping system which was re-introduced on the Structure 20 finds its way into the 21, and that’s a good thing. The Flywire cords are restricted to the rearfoot, and this means that the midfoot is secured entirely by the straps. We had our work cut out for us last year because the Odyssey 2 was the perfect upgrade path from the Structure. This year, the Odyssey is gone so the only way is down. If you don’t require Structure levels of support, then you should look up the Nike Zoom Span 2.

The Structure 21 is a support shoe with a harder medial post. For this reason, we’ll exclude products like the Nike Lunarglide or the adidas Supernova ST from this list. Expect 400 miles of life from the Structure 21, with the wear and tear of the midsole cushioning and outsole happening in a gradual fashion. UPPER FIT AND FEEL Both the tongue and heel are moderately padded. However, runners who’re switching to the Structure from brands such as Saucony and Brooks will notice the utilitarian feel of the Structure.The ride quality hasn’t changed at all, so the upper gets all the new updates. That being said, all changes are design and material related. Little has changed in how the Structure fits.