For years, the performance-running conversation has revolved around one idea: the super shoe.
High-rebound foams, rigid plates, lightweight construction and increasingly aggressive geometry have transformed what runners expect from racing footwear. But VING NIRUN starts from a different question:
What if those same performance principles could exist in a sandal?
That idea is what VING calls a “Super Sandal” — not a minimalist barefoot sandal, not a recovery slide, and not simply a flip-flop with a sporty look. NIRUN is designed as performance footwear built around an open-foot architecture, combining a carbon plate, high-rebound foam and lightweight construction in a form that challenges the usual definition of a racing shoe. VING itself describes NIRUN as a carbon-plated performance sandal, while international design awards have recognised the product in running and sports-performance categories.
So, What Exactly Is a “Super Sandal”?
“Super sandal” is not an official footwear-industry classification in the way that racing shoes are sometimes grouped by governing-body specifications. It is better understood as a concept borrowed from the modern super-shoe era.
A typical super shoe combines several technologies intended to work together: highly responsive foam, a stiffening element such as a carbon-fibre plate, low weight and geometry designed to improve how the runner moves through each stride.
NIRUN applies a similar philosophy while removing one of the most familiar parts of a running shoe: the enclosed upper.
Instead of wrapping the entire foot in fabric, VING retains an open sandal structure and concentrates much of the engineering inside the platform beneath the foot.
That makes NIRUN interesting for a reason beyond appearance. The product asks whether a performance system normally associated with racing shoes can be re-engineered around a fundamentally different footwear architecture.
1. The Trident Carbon Plate
The most obvious connection between NIRUN and modern racing footwear is its carbon plate.
According to the FIT Sport Design Awards technical description, NIRUN uses what VING calls the Trident Carbon Plate, incorporating approximately 10% recycled material. The plate is intended to add structural stiffness and assist propulsion while working with the foam platform beneath the runner.
Carbon plates do not create energy on their own. Their role is better understood as part of a mechanical system.
In a running shoe or sandal, plate stiffness, foam deformation, geometry and the runner’s own biomechanics interact. A plate can help control how the midsole bends and may influence how force is transmitted through the platform during stance and toe-off.
This distinction matters.
Calling carbon a “spring” can make the technology sound almost magical. In reality, the performance comes from how the entire platform behaves as a system.
For NIRUN, the engineering challenge is arguably even more unusual because the plate is being integrated into a sandal rather than an enclosed racing shoe.
2. VEPRO Foam and the 66% Rebound Claim
The second major component is VEPRO foam.
VING describes the material as a bio-based high-rebound foam. Technical information submitted to the FIT Sport Design Awards lists a rebound rate of 66%, while describing the foam as providing cushioning, responsiveness and shock absorption.
This is important because a carbon plate alone does not make a performance platform.
The foam underneath and around it has to deform when the foot loads the sandal, absorb part of that mechanical input and recover quickly enough to support the next phase of the stride.
VING’s own technical description divides the foam system into tuned layers with different hardness characteristics, rather than treating the entire sandal as one uniformly soft piece of material.
That tuning is part of what separates a performance sandal from a conventional soft flip-flop.
Too soft, and the platform may feel unstable or inefficient.
Too firm, and the sandal can lose the comfort and impact-management qualities runners expect over longer distances.
The objective is therefore not simply “maximum softness” but a balance between cushioning, stability and responsiveness.
3. Lightweight by Removing More Than Just the Upper
Another important part of the Super Sandal concept is weight.
The Global Footwear Awards lists NIRUN at 167 grams in size EU 42 / US 9 for the submitted award specification. The same award recognised NIRUN as the overall winner in Sports Performance, as well as a winner in the Sandals and Running/Trail Running categories.
One reason the design can remain light is obvious: there is much less upper material than in a conventional running shoe.
But VING also takes weight reduction further through what it calls an “Outsoless” construction.
Instead of attaching a separate rubber outsole underneath the foam, the company says the durable foam compound itself is designed to provide the necessary ground-contact surface. That removes another component from the traditional footwear stack.
The idea is simple:
fewer components, less material, lower weight.
But achieving that without sacrificing durability or traction is a much harder materials-engineering problem.
The FIT award documentation states that NIRUN was tested for more than 1,000 kilometres of use, giving some context to the durability target behind the construction.
4. Why an Open-Foot Design Changes the Engineering Problem
The sandal format is not merely an aesthetic decision.
When the upper disappears, several characteristics of the footwear change at once.
There is less material around the forefoot. Heat can escape more easily. Water does not become trapped inside a fabric upper in the same way. The toes have considerably more freedom, and there is no conventional toe box restricting the front of the foot.
But the trade-off is equally important.
A traditional racing shoe uses its upper, lacing system, heel counter and internal structure to keep the foot positioned relative to the platform.
A sandal has to achieve adequate security using far less material.
That means the relationship between the straps, heel retention, footbed geometry and platform stability becomes particularly important.
This is one of the reasons the term Super Sandal is more useful than simply describing NIRUN as “a lightweight flip-flop.”
The challenge is not merely to remove the shoe upper.
It is to remove it without removing the performance function that the upper normally provides.
5. One-Piece Injection Molding
NIRUN also uses an injection-molding approach designed to reduce the number of separate components involved in production.
According to the FIT award description, the process creates a largely seamless structure while aiming to reduce material waste and energy use during manufacturing.
This is significant because conventional performance footwear can involve multiple pieces of foam, rubber, textile, reinforcement and adhesive assembled through numerous manufacturing stages.
A more integrated construction can potentially simplify both the product and the manufacturing process.
That does not automatically make a product sustainable, and sustainability depends on much more than component count alone. But it does represent a different design philosophy: performance does not necessarily have to come from adding more parts.
Sometimes the engineering challenge is to achieve more with fewer.
6. Bio-Based and Recycled Material Choices
The sustainability component of NIRUN is also built into its material story.
The FIT Sport Design Awards identifies the VEPRO system as bio-based and notes that the Trident Carbon Plate incorporates 10% recycled material. The same submission highlights injection molding as part of VING’s effort to reduce production waste.
This does not mean NIRUN should be described as a fully circular or zero-impact product.
A more accurate interpretation is that VING is attempting to combine performance engineering with material reduction and lower-waste manufacturing choices rather than treating sustainability as a completely separate design project.
That combination is increasingly relevant to performance footwear.
The future challenge for the industry is unlikely to be just making products faster.
It will be making them faster, lighter and more durable while also reconsidering how many materials and manufacturing steps are necessary to produce them.
7. Does It Actually Work at Marathon Pace?
Technology descriptions are one thing.
Race performance is another.
One of the clearest pieces of real-world evidence behind NIRUN came at the Khon Kaen Marathon, where Kenyan marathoner Barnabas Kiplimo won in 2:18:55 while racing in VING NIRUN.
The result attracted attention from international running publications including Canadian Running and Marathon Handbook precisely because of how unusual the footwear was.
Canadian Running also reported that VING had established a testing camp in Iten, Kenya, where the product was being evaluated by elite distance runners and marathoners under demanding training conditions.
One race does not prove that a sandal is universally faster than conventional racing shoes.
Nor does it establish a laboratory-measured running-economy advantage.
But it answers a more fundamental question.
Can this architecture handle serious marathon racing?
A 2:18:55 winning performance provides compelling evidence that, at least for one elite athlete on one race day, the concept was capable of operating well beyond novelty territory.
8. The Global Footwear Industry Has Started Paying Attention
NIRUN has also received recognition outside VING’s own marketing channels.
At the 2025 Global Footwear Awards, it was named the Overall Winner in Sports Performance, while also winning in the Sandals and Running/Trail Running categories.
It also received a Winner in Sportswear Design / Footwear designation from the FIT Sport Design Awards.
Those awards matter for a young category because they position the product in an unusual overlap.
NIRUN is being evaluated as a sandal, but also as performance running footwear.
That overlap is essentially the entire idea behind the Super Sandal.
Super Shoe vs. Super Sandal
At first glance, the comparison is simple.
A modern super shoe has a responsive foam platform and often a rigid plate.
NIRUN does too.
But the architecture surrounding those technologies is substantially different.
A super shoe generally uses a lightweight enclosed upper to secure the foot. A Super Sandal intentionally keeps much of the foot exposed.
A racing shoe typically uses a separate outsole. NIRUN’s current design philosophy attempts to eliminate that extra layer.
A super shoe evolves the conventional running shoe.
The Super Sandal asks whether the conventional shoe needs to remain the starting point at all.
That is a much bigger design question.
Is a Super Sandal for Every Runner?
Probably not — and it does not need to be.
Footwear remains highly individual.
Runners differ in foot shape, biomechanics, surface preference, climate, stability needs and simply how they like footwear to feel.
Some athletes will always prefer the locked-down sensation of a conventional racing upper. Others may value an open forefoot, lower overall material coverage and the unusual ground feel of a sandal platform.
The more interesting point is that performance footwear is beginning to have another option.
For decades, the sandal and the racing shoe occupied almost opposite ends of the footwear spectrum.
One represented simplicity and openness.
The other represented engineering and competition.
NIRUN tries to place both ideas in the same product.
VING Perspective: Performance Does Not Have to Look Familiar
The most interesting part of NIRUN may not ultimately be its carbon plate or its foam.
It may be the assumption it challenges.
Running innovation is often incremental. Brands refine stack heights, geometries, foams and uppers while the underlying idea of what a running shoe should look like remains largely unchanged.
The Super Sandal begins somewhere else.
It asks what happens when the familiar silhouette is removed but the performance ambition remains.
That does not mean sandals will replace running shoes.
It means performance footwear has room for more than one architecture.
And for a brand that began in Thailand with the idea that runners should have more freedom around their feet, that possibility may be more important than simply creating another fast shoe.
The Super Sandal, Defined
So, what is a Super Sandal?
In VING’s interpretation, it is an open-foot performance platform that combines the engineering language of modern racing footwear with the freedom and simplicity of a sandal.
In the case of NIRUN, that means:
- a carbon-fibre plate designed to control stiffness and propulsion,
- bio-based VEPRO high-rebound foam,
- a lightweight platform of roughly 167 grams in the award-listed EU 42 specification,
- an outsole-free construction intended to reduce components and weight,
- an injection-molded architecture,
- and an open design created for running rather than merely casual wear.
Whether “Super Sandal” eventually becomes a category larger than VING remains to be seen.
But the question behind it is already worth asking:
If performance technology no longer requires a conventional shoe, what else could running footwear become?
