A set of technical drawings has been making the rounds on Instagram that may offer the first look at Nike’s next big thing in the super shoes arms race. Or it might be nothing. That’s the fun part.
The images, posted by @the_secret_shoe, show what appear to be patent diagrams for a shoe built around a “double stacked airbag on a wide carbon plate and midsole geometry.” The account is calling it the Nike Apex. Nike has said nothing publicly. And we couldn’t find the images anywhere else online.
But here’s the thing: the design shown tracks remarkably closely with a real Nike patent filed just four months ago.
What the images show
The diagrams are classic patent-drawing fare — black-and-white line art with numbered callouts pointing at every component of the sole. What stands out is the cushioning stack in the heel: a horseshoe-shaped air chamber with what looks like two layers of cushioning nested inside it.
“It is a double stacked airbag on a wide carbon plate and midsole geometry,” the @the_secret_shoe post reads. “This is the next step in Nike Air innovation and the progression of what was started in the Nike Alphafly.”
Bold claim. But not an obviously wrong one.
What the patent says
Nike filed patent application No. 19/390,207 on November 14, 2025, titled “Airbag for Article of Footwear.” It describes a sole structure built around a fluid-filled bladder with three connected segments: two tubes running along the inner and outer sides of the heel, joined at the back by a curved rear section. Together, they form a horseshoe shape that wraps around the back of the foot.
The whole thing is pressurized with air and made from transparent thermoplastic polyurethane — meaning you’d be able to see the internals from outside the shoe, as Nike has done with Alphafly and Air Max designs.
A dividing “web area” between the two side tubes creates two separate pockets inside the chamber. One faces up toward the foot, the other faces down toward the ground. Each pocket holds a different cushioning element, stacked one on top of the other — which is exactly what the Instagram images appear to show.
The tubes also taper in diameter as they move from the heel toward the midfoot. The logic: more cushioning volume at the back, where ground-reaction forces hit hardest, and a firmer, more responsive feel as your foot rolls through to toe-off.
It’s clever engineering, if it works the way Nike intends.
What it could mean for you on race day
The Alphafly 3 — currently Nike’s best racing shoe — already uses a dual Air Zoom pod system paired with a carbon plate and ZoomX foam. This design takes that idea and makes it more aggressive: instead of two discrete pods, a continuous tube wraps the entire heel, creating what Nike’s patent calls a “unitary pressure system.”
When one part of the chamber compresses on impact, fluid moves through the connected segments. The energy doesn’t just disappear — it redistributes. Nike describes this as “gradient cushioning,” meaning the harder you land, the more dynamically the system responds.
For marathon runners, that matters most late in a race, when heel striking becomes more pronounced and impact forces are harder on the body. A shoe that gets more responsive under load — rather than less — is exactly what the sport has been asking for.
About that “Apex” name
It’s catchy, but don’t engrave it on anything yet. The name “Nike Apex” appears nowhere in the patent filing, and Nike has made no public announcement. Leaked product names have a spotty track record; they’re often placeholders, internal codenames, or just wrong.
What’s harder to dismiss is that the geometry shown in the Instagram images — the horseshoe chamber, the stacked cushioning layers, the transparent outer shell — matches the November 2025 patent closely enough to raise an eyebrow.
Could be the next Alphafly. Could be something entirely new. Could be an internal prototype that never ships. Nike files dozens of footwear patents a year and produces a fraction of them.
The bigger picture
Nike has been under real competitive pressure in the super shoe space. Adidas’s Adizero series has eaten into its dominance at the front of major marathons, and brands like On and Hoka are no longer pretending they’re not coming for the elite market.
A shoe that meaningfully pushes beyond the Alphafly — with a more sophisticated air system and a bolder cushioning stack — would be a statement. Whether the Apex is that shoe, or just a patent that gets quietly filed away, remains to be seen.
We’ll be watching.
They might have trouble as there is the Apex Beat in Asia.