Pebax®: The Performance-Boosting Secret in Running Shoes

If you’re into high-performance running gear, chances are you’ve encountered the term “Pebax” popping up more frequently, especially in the latest and greatest running shoes. And if you haven’t noticed it yet, now’s the time to get acquainted with this material that’s setting new standards in the world of sports performance, and more specifically running.

As a professional running shoe reviewer here at Trail & Kale Running Co., I’m always on the lookout for innovative technologies that can provide runners an edge. Pebax® is one of those innovations, quietly reshaping the landscape of high-performance running shoes. Here’s everything you need to know about Pebax, why it’s gaining traction among top brands, and why it just might become your new favorite midsole or plate material for a faster, more efficient run.

What is Pebax®?

Pebax® is an advanced polymer made using what scientists call ‘block copolymer technology’ and known more widely as PEBA (polyether block amide) foam, which is a type of thermoplastic elastomer that can be produced by different companies under various brand names – Pebax® is what Arkema calls their PEBA formulated material.

Block copolymer technology involves blending two different types of polymer blocks, polyether and polyamide, to create a material that’s incredibly flexible and resilient. The result? A polymer that offers a unique combination of lightweight performance, elasticity, resistance to low temperatures, and durability that outshines traditional materials like EVA (Ethylene Vinyl Acetate) or TPU (Thermoplastic Polyurethane).

In simpler terms, Pebax®, Arkema’s proprietary PEBA material, delivers outstanding energy return, meaning it stores energy when compressed and then efficiently releases that energy back into your step – hence why it makes for the perfect material for running shoe midsoles.

In terms of performance; this translates to a springy, explosive feel underfoot that can make every stride feel more powerful and less taxing over longer distances, and even in winter months where cold temperatures can affect the responsive and cushioned performance of midsoles.

To drill this point home one more time, as there can be some confusion in the industry… Pebax® is a trade name for a specific type of polymer: polyether block amide (PEBA). Here’s a quick breakdown of other terms and technologies, also using PEBA:

• Pebax® – The most common brand name for the polymer produced by Arkema, the company that manufactures it.
• PEBA – The generic abbreviation for polyether block amide, which is the chemical name of the material – you’ll find most brands refer to the material in this way.
• ZoomX Foam – A specific implementation of Pebax® foam used in Nike’s high-performance running shoes.
• Infinergy® – BASF’s version of an expanded thermoplastic polyurethane (E-TPU). This is what features in Adidas Boost foams.

Why it’s currently the best material for running shoe midsoles

There are several reasons why Pebax® stands out from other materials commonly used in running shoe construction:

1. Energy Return: One of the main characteristics that sets Pebax® apart is its low energy loss. When the material is stretched or compressed, it retains and returns a large proportion of the energy, enhancing propulsion with each step. This feature makes it particularly valuable for runners seeking maximum efficiency and speed.
2. Ultra Lightweight: Compared to other cushioning materials, Pebax® is remarkably light. This helps reduce the overall weight of the shoe, which in turn can decrease fatigue over long distances and help you achieve faster times.
3. Elasticity and Shock Resistance: Pebax® polymers offer exceptional elasticity, meaning they can absorb impact and bounce back quickly. This makes them ideal for running shoes, where shock absorption and foot protection are key.
4. Cold Weather Performance: Unlike some materials that become stiff in cold temperatures, Pebax® maintains its flexibility and performance. This makes it an excellent choice for all-season running shoes.
5. Sustainable Option: Pebax® is also available in a bio-based version made from renewable castor beans, known as Pebax® Rnew® range. This version offers the same high performance but with a lower environmental footprint—great news for eco-conscious runners.

Top rated running shoes using PEBA

More and more leading brands are recognizing the potential of PEBA to enhance running shoe performance. Here are some of the running shoes that performed outstandingly well in my reviews, utilizing this cutting-edge technology:

• Nike Alphafly 3 – Super lightweight race day shoes with full-length ZoomX foam (ZoomX is a specific implementation of Pebax® foam), two Air Zoom units, and a carbon fiber Flyplate for maximum propulsion and energy return. Ideal for marathon racing, speed work, and tempo runs, with a breathable Atomknit upper that hugs the foot. Read review.
• HOKA Tecton X 3 – A premium trail racing shoe featuring lightweight dual-layer PEBA foam, MATRYX Upper, built-in gaiter, and a carbon fiber winged plate for speed and stability, combined with a Vibram Megagrip outsole to tackle any terrain. Read review.
• On Cloudboom Echo 3 – A premium racing shoe featuring a carbon speedboard, Pebax® Helion midsole foam, and rocker geometry for maximum propulsion and efficiency. Ideal for runners aiming for their fastest times in races from 5km to marathons. Read review.

These shoes are consistently favored by world-class athletes and have been instrumental in setting numerous records. So if you’re looking for a shoe that gives you an edge, you might want to look at models that feature Pebax® technology too.

How Pebax® boosts runner performance

Some people in the industry refer to Pebax® or PEBA foams as a form of “technological doping”, a nod to its performance-enhancing qualities that some might argue are almost too good. While it’s not exactly cheating, having shoes made with PEBA can certainly make a difference, providing you with that little extra push when you need it most.

For the record, I don’t like the term ‘technological doping’, as it sounds nefarious, and scientific innovation in sports performance should be something that is celebrated.

The versatility of Pebax® is another reason it’s rapidly gaining popularity. This material isn’t just for midsoles—it’s being used in everything from injected components and foams to carbon-infused plates and breathable membranes. It offers brands a wide range of options to fine-tune their shoes to specific performance needs, whether that’s providing extra bounce, cutting down on weight, or maximizing durability. It also pushes the consumer prices up too, however.

Why as a consumer, you should know about Pebax®

If you’re serious about running, whether you’re chasing personal bests or just aiming for a smoother, more enjoyable run, then understanding the components that make up your running shoes is crucial. Pebax® is a PEBA-based material designed to maximize performance, offering tangible benefits like improved energy return, reduced weight, and enhanced comfort.

The future of running shoe technology is bright

Component brands like the Pebax®, BOA Fit System, Vibram MegaGrip, and MATRYX Uppers are all driving innovation in running shoes today – and it’s so exciting to be a part of testing and reviewing running shoes utilizing these innovative materials and systems.

As more brands adopt Pebax®, improved PEBA variants are developed, and new applications are discovered, we can expect to see even more exciting developments in the years to come.

So, next time you’re in the market for a new pair of running shoes, keep an eye out for the ones with Pebax® or PEBA components. It could just be the secret ingredient that takes your performance to the next level. And who doesn’t want a little extra spring in their step?