SKU: 21489054933

Nike ReactX Infinity Run 4 - Men's

Sale price$134.95 Regular price$149.95
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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

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Description

Nike ReactX Infinity Run 4 - Men'sWith supportive cushioning built for a smooth run, the InfinityRN 4 is a brand new take on a familiar favourite. It's made from our all new Nike ReactX foam, which gives you 13% more energy return compared with Nike React foam, to help you stay fresh and bouncy. (What's more? Nike ReactX reduces the carbon footprint of the midsole by at least 43% compared with Nike React foam, so it helps support the planet, too). We coupled the ReactX foam with Nike

With supportive cushioning built for a smooth run, the InfinityRN 4 is a brand-new take on a familiar favourite. It's made from our all-new Nike ReactX foam, which gives you 13% more energy return compared with Nike React foam, to help you stay fresh and bouncy. (What's more? Nike ReactX reduces the carbon footprint of the midsole by at least 43% compared with Nike React foam, so it helps support the planet, too). We coupled the ReactX foam with Nike Running's best-fitting Flyknit yet, so you can take off any time, anywhere with secure upper support and breathability. It's the kind of shoe that can grant you that priceless peace of mind to go faster and further, thanks to an intuitive design that supports every stride.


What's new about the InfinityRN 4?

This version of the Infinity still provides a plush and smooth ride, with the new ReactX foam delivering more support. The revamped Flyknit upper and wider toe box help your foot feel stable and secure.


Cushioning: Super-High

The more cushioning that you have underfoot, the softer and more comfortable your running experience can be. Cushioning helps soften the impact as your feet hit the ground. ReactX foam gives you an incredibly smooth feeling, helping you push your limits.


Support: High

The more supportive the shoe, the more stability it can give to your natural stride. A combination of tuned support and intentionally placed cushioning helps you feel secure with every step. A curved outsole helps your foot rock smoothly from heel to toe and through your stride to footstrike. It makes every step feel more natural and adds efficiency to your run, helping you waste less energy as you hit your stride. A new internal Flyknit fit band (like a rubber band around the middle of your foot) offers elastic, secure support.


Responsiveness: moderate

The more responsive the shoe, the more energy return you can get back with each step. Whether you want to run a little bit faster or with a little less effort, responsive shoes help give you slightly more spring in your step to get more out of your run. ReactX foam gives you +13% energy return compared with React foam, helping you stay fresh and bouncy during your run.


Contained breathability

A water-repellent liner in the toe helps keep you dry when the weather turns.


More benefits

  • Waffle outsole provides durable traction.
  • Flyknit tongue is adjustable and plush.
  • Foam collar is soft and supportive to the touch.
  • Increased rubber at the outsole gives traction and durability.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 21489054933

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Cheryl
Charlottesville, US
★★★★★ 5
Durability
Style: Ball, Size: Medium (Pack of 2)
My dog loves these balls!
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Reviewed in the United States on May 25, 2026
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ShainaKatt
Lexington, US
★★★★★ 5
Dogs love them
Style: Ball, Size: Medium (Pack of 2)
Our dogs love these. What’s great is that you can add more plastic (like from water bottles) if the plastic starts to fall out from the center. If you have a chewer, though, these won’t last you long. Our shepherd mix loves these and then starts to pull the rubber apart the more she plays with it. Our other dogs treat it normally, though, and those ones last forever. They also get some decent height when bounced, and they make a unique whistling noise when thrown.
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Reviewed in the United States on November 17, 2025
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waragon
Waukegan, US
★★★★★ 4
Our pup loves the cronch cronch!
Style: Ball, Size: Medium (Pack of 1)
I bought our 15 month old Coton several Chuck-It toys on an Amazon deal. He is incredibly playful, mischievous, and ball/toy obsessed, especially for anything that makes noise. He can also be very destructive so I love how durable most of their products are - they’re among our longest lasting toys and worth every penny. We have yet to take them to the dog park, but they’re a perfect size for sharing in play time. And they are keeping him busy at home - that’s a good thing. He loves investigating the crunchy-cronchy-crinkly sound which is a nice change from squeakers. It can withstand his destructive chewing well-being, gentle on his little teeth. I love that. Chuck-It is thinking outside the box with a variety of balls to keep dogs engaged! I do worry about the crinkle plastic inside because it is accessible because of the air holes and it feels a little sharp. So this will have to be an at home toy so we can monitor his play.
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Reviewed in the United States on May 28, 2026
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Mystical Lady
Lake Worth, US
★★★★★ 5
Great products all around
Style: Ball, Size: Medium (Pack of 2)
Any of these balls are great! My dogs love all of them. The squeaky ones are their favorite!
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Reviewed in the United States on March 12, 2026
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Raquel
Dallas, US
★★★★★ 5
My dog loves it!
Style: Ball, Size: Medium (Pack of 1)
This crunch ball was a Christmas gift for my 65lbs fur baby. It’s now mid April and he still loves it. He loves running after it and chomping down on it. It is still in good shape despite all the chomping it’s gotta . I highly recommend. He goes back to this toy agin and again! Great buy.
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Reviewed in the United States on April 15, 2026

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