Nike Rejuven8 Run 4x4 vs ReactX: What Changes?

The Rejuven8 Run 4x4 and ReactX Rejuven8 are different shoes, despite sharing the Rejuven8 name. Run 4x4 places a removable bootie inside a suede outer construction with foam and encapsulated Air. ReactX is a foam slip-on with ventilation holes. Decide which design you want before comparing prices or choosing a size. A shortened listing that only says “Nike Rejuven8” leaves the most important buying question unanswered.

What changes between Run 4x4 and ReactX Rejuven8?

The main difference is the construction around your foot. Run 4x4 combines an inner bootie with an outer shoe; ReactX uses a foam upper and midsole in a slip-on design.

Nike’s Smoke Grey Run 4x4 description names the removable bootie, shaggy suede outer layer and encapsulated Air. The ReactX product details identify ReactX foam, ventilation holes and a rubber outsole.

These are differences in Nike’s published specifications. They do not establish which shoe feels softer, fits better or improves recovery for a particular person.

What does the Run 4x4 removable bootie change?

The removable bootie gives Run 4x4 a separate inner component. Nike describes wearing that bootie separately, then stepping into the outer shoe when wanted.

That distinction is easy to miss in a side-view photograph. Check images of the complete shoe and read the exact product description. A foam slip-on called ReactX Rejuven8 is a different design, even if a seller puts both under a broad recovery-shoe category.

Nike’s Linen and Natural IU3143-200 is a second Run 4x4 colorway. Its source describes the same removable-bootie concept.

Which Run 4x4 color are you looking at?

Nike identifies Smoke Grey and Black as IU3143-001 and Linen and Natural as IU3143-200. Keep the final three characters when saving the code. The shared IU3143 prefix does not distinguish those colors.

What should you check on a ReactX listing?

Check the full code, color and selected product category. The ReactX example here is HV5060-700 in Topaz Gold, Turf Orange and Light Crimson, rather than either suede Run 4x4 release.

This is the exact HV5060-700 ReactX reference. Its listed sale price is a dated US observation, not a price for every Rejuven8 color or category.

On 11 November, Nike’s US ReactX page displayed $47.97, reduced from $75. The two Run 4x4 launch pages displayed $145 each. Check the current selected listing before treating that price gap as a like-for-like choice.

Can you use the same size advice for both models?

Use each exact product’s size labels and guidance. The shared name does not establish identical sizing, and a number without its category can be misleading.

For example, the featured ReactX page pairs men’s 8 with women’s 9 and recommends sizing up if you wear a half size. That pairing and advice belong to this listing. They are not a conversion rule or fit recommendation for the Women’s Run 4x4.

Save the complete model name, code and offered label together. Our Nike style-code lookup guide explains how to keep a product identity intact when comparing listings.

Which Rejuven8 should you choose?

Choose Run 4x4 if the removable bootie and suede outer construction are the features you want. Choose the ReactX reference if you are looking for the foam slip-on shown above.

Once the design is settled, compare the exact color, current price and size label. For an upcoming Run 4x4, use the US release calendar for the latest schedule and the SNKRS draw guide for that purchase channel. A direct Nike product listing and an upcoming SNKRS release should be checked separately.