A supportive and cushioned shoe built for a smooth run.

With supportive cushioning built for a smooth run, the Nike InfinityRN 4 is a brand-new take on a familiar favorite. 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 its carbon footprint in a pair of midsoles by at least 43% compared to Nike React foam.*) We coupled the ReactX foam with Nike Running's best-fitting Flyknit yet, so you can take off anytime, 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 farther thanks to an intuitive design that supports every stride.

Product Details

What's New About the Nike InfinityRN 4?

This version of the Nike InfinityRN 4 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.

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

• 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.
• Weight: 353 g (Men's size 10)
• Heel-To-Toe Drop: 9 mm

Fit & Care

• Nike reports this item may fit snug; Nike recommends sizing up for this style.
• We don’t recommend using a washing machine or dryer to clean your shoes. Washing machines expose shoes to complete submersion and excessive agitation. Machine dryers subject shoes to excessive heat. Both can affect material integrity, shoe construction, and performance. Instead please follow the care instructions provided in .

Shipping & Returns

• This item is shipped from our facilities in Austin, Texas.
• Orders placed before 12pm CST are shipped out the same day.
• We operate on a business day schedule, Monday - Friday.
• This item is not eligible for international shipping.
• If you have further questions regarding shipping, please contact us at  or contact us at 800-475-6008.

Our  makes it easy to send back your items for an exchange, refund or store credit. We will even pay for your return shipping if you opt for a store credit refund or exchange for a new item!

• Shoes must be returned in the original shoe box and in new condition.
• Items are eligible for refund back to original payment method as long as the return is initiated within 45 days.
• Items are eligible for exchange or store credit as long as the return is initiated within 90 days.
• This item is covered by a 90 day warranty. See our  for more information regarding damaged or defective items.

Please note: Warranty claims are not available for refund, replacement or store credit only.