STOP SETTLING FOR THE SAME OLD CORE.
The game has evolved. The technology inside your paddle should too.
For years, polypropylene honeycomb cores have been the backbone of pickleball paddle construction. They helped shape the modern game — lightweight structures, reliable performance, a foundation for countless paddle designs.
But pickleball isn't standing still. Players are hitting harder. Rallies are getting faster. Expectations for control, power, consistency, and durability have never been higher. And as paddle technology advances, one question deserves more attention:
Why should the next generation of paddles be built around yesterday's core design?
At HUDEF, we believe innovation goes deeper than the surface. That's why we developed the SXD Microcellular Foam Core — a full-foam core engineered around the demands of modern pickleball. Not another cosmetic upgrade. Not just another carbon fiber face. A different approach to what happens inside the paddle.
The core problem: not all foam is created equal
Foam is everywhere. It's used in packaging, footwear, insulation, protective equipment, and advanced engineering. But here's what matters: foam isn't a single material with a single performance profile.
Different formulations have different densities, cell structures, hardness levels, energy-return characteristics, and resistance to repeated compression. A material designed to cushion a running shoe isn't automatically optimized for thousands of paddle impacts. And simply replacing a honeycomb core with foam doesn't guarantee a better paddle.
Full-foam technology isn't impressive just because it's foam. It's impressive when the material is engineered for the job. That's the difference HUDEF set out to pursue with SXD.
SXD microcellular foam: engineered for the impact
SXD isn't a foam selected from a catalog. It is HUDEF's dedicated microcellular foam core, developed around specific performance and manufacturing requirements for racket sports. Unlike a conventional polypropylene honeycomb core, which uses a repeating grid of larger hollow channels, SXD uses a continuous microcellular structure throughout the paddle: a cross-linked, closed-cell polymer foam whose tiny enclosed cells are distributed through the whole core.
That structural difference opens up different possibilities for tuning how a paddle responds.
Built to fight compression
Every hard drive sends force through your paddle, and over thousands of impacts, the way a core handles repeated loading becomes critical. SXD is engineered with structural resilience in mind, using material specifications intended to resist permanent compression and maintain a consistent core response over time.
A sweet spot shouldn't feel like a countdown to failure.
Soft touch. Serious response.
Control and power shouldn't have to feel like enemies. SXD is designed to deliver a more cushioned sensation during softer exchanges while retaining a responsive feel when players accelerate through the ball — controlled resets at the kitchen line, followed by decisive drives when the opening appears.
Soft when finesse matters. Responsive when it's time to attack.
Consistency is not optional
Great shots demand repeatable feedback. SXD's density, hardness, and dimensional requirements are controlled during manufacturing to reduce unwanted variation in the finished core — because an advanced paddle shouldn't just feel impressive on the first swing. It should be built with consistency in mind, from the inside out.
Beyond marketing claims: inside SXD quality control
The pickleball industry loves performance buzzwords. Premium. Advanced. Revolutionary. Impressive language means little without engineering discipline — so here is the actual specification every batch of SXD foam is checked against before it becomes part of a finished paddle:
| Core structure | Closed-cell microcellular foam |
| Material design | Cross-linked polymer foam |
| Hardness | Shore C 78–80 |
| Density | 70–90 kg/m³ |
| Core blank thickness | 14–14.5 mm |
| Finished paddle thickness | 16 mm or under |
| Temperature testing | Compression and deformation tested at 80°C and −80°C |
| Quality-control focus | Structure, hardness, density, dimensions, deformation resistance |
Our material evaluation and production quality control focus on:
- Cell structure — blanks are sliced open to examine the foam's internal structure and uniformity, and the closed-cell structure is verified with a water test
- Hardness — checked against the Shore C 78–80 specification on every batch
- Density — controlled within the 70–90 kg/m³ target range
- Dimensional accuracy — core blanks measured before lamination
- Deformation resistance — compression behavior evaluated under mechanical loading and at temperature extremes
- Material documentation — COA, RoHS and REACH records reviewed for every material lot
Core blanks are measured before lamination. Thickness and hardness are controlled batch by batch, not spot-checked at the end.
Compression and deformation testing, including at temperature extremes, is part of the written SXD spec.
Finished paddles go through instrument testing too, not just the raw foam.
Because innovation isn't just about inventing something different. It's about engineering it well enough to build it again and again.
Full foam vs. honeycomb: time to rethink the core
Let's be clear: honeycomb construction helped build modern pickleball. It's lightweight, well understood, and continues to perform effectively in many excellent paddles. But it isn't the only answer anymore. The two architectures approach structural design differently:
| Internal architecture | Traditional PP honeycomb: repeating hollow-channel structure | SXD full-foam: continuous microcellular foam structure |
| Structural design | Thin polymer walls surrounding larger cells | Polymer matrix containing enclosed microcells |
| Impact response | Depends on cell geometry, faces and overall construction | Tunable through foam formulation, density and construction |
| Vibration behavior | Depends on the complete paddle assembly | Designed with a controlled, damped feel in mind |
| Durability consideration | Cell-wall damage and core crush are possible failure modes | Compression set and long-term foam resilience must be controlled |
| Design philosophy | Established lightweight structural system | Alternative core architecture for performance tuning |
Left: an SXD full-foam core — one solid piece of foam. Right: a polypropylene honeycomb core — a grid of hollow cells.
Different architecture. Different engineering possibilities.
A full-foam core isn't automatically superior to every honeycomb design. Paddle performance also depends on face materials, layup, geometry, weight distribution, and manufacturing quality. But the opportunity is significant: engineers can approach core response through a different combination of material properties and structural design. We didn't develop SXD to imitate the construction of yesterday's paddles. We developed it to explore what comes next.
A new core deserves a serious face
A paddle is more than its core. Even the most carefully engineered foam needs the right face construction to translate its characteristics into the player's experience. That's why the H-BLITZ pairs SXD full-foam technology with a T700 carbon fiber face.
And we didn't stop there. The face incorporates specialized grit materials — including zircon-based particles — into the carbon fiber resin system, rather than relying solely on a conventional surface-applied grit coating. The goal is straightforward: a textured hitting surface engineered with long-term spin performance in mind. Core engineering and face engineering have to work together. Because changing the inside means thinking differently about the outside, too.
This isn't about following the full-foam trend
Full-foam paddles are attracting attention throughout pickleball, and that attention makes sense. But there's a difference between following a material trend and developing a material around specific engineering goals. HUDEF's approach with SXD focuses on controlling the details: material formulation, cell structure, density, hardness, compression behavior, core dimensions. No single number tells the entire story — it's the combination of these choices, followed by careful paddle construction, that determines what players ultimately feel.
We're not interested in foam for the sake of foam. We're interested in what purpose-built foam engineering can make possible. And SXD is our answer to that challenge.
SXD foam: frequently asked questions
What is SXD Microcellular Foam?
SXD is HUDEF's dedicated microcellular full-foam core technology, developed for racket-sport applications. It uses a cross-linked, closed-cell foam structure throughout the paddle core rather than a conventional polypropylene honeycomb architecture.
Is a full-foam pickleball paddle better than a honeycomb paddle?
Not automatically. Both technologies have advantages, and performance depends on the full paddle design. SXD gives HUDEF a different material platform for tuning feel, response, and structural consistency.
Is SXD the same as EVA or EPP foam?
No. SXD is HUDEF's proprietary core, developed around its own material and performance specifications. EVA and EPP describe broader material families; actual properties depend on formulation, processing, and structure.
Can a full-foam pickleball paddle develop dead spots?
Any core material can change under certain conditions. Honeycomb cores can suffer structural cell damage, while foam materials can experience compression set or fatigue. SXD is designed with compression resistance and repeatable core response as development priorities — and every batch is tested against that spec.
Does SXD provide both control and power?
SXD is engineered to balance a cushioned contact feel with a responsive hitting sensation. Actual power and control depend on the complete paddle construction and the individual player's technique.
Which HUDEF paddle features SXD foam?
SXD makes its debut in the HUDEF H-BLITZ: a 16mm SXD full-foam core, T700 carbon fiber face with resin-infused grit, an elongated 16.5" × 7.4" shape at about 8.0 oz, and a 5.5" handle. Like every HUDEF paddle, it is USAP certified. The H-BLITZ arrives in October 2026.
The next chapter has a name: H-BLITZ
The honeycomb era helped define pickleball. We're building for what comes next.
For years, paddle innovation has focused heavily on faces, textures, shapes, and construction methods. We believe the core deserves its own revolution. SXD represents HUDEF's determination to rethink the material at the center of the paddle — not simply change what players see, but explore what they can feel. And this is only the beginning.
HUDEF H-BLITZ. Powered by SXD Microcellular Foam Core. Coming October 2026.
THE CORE IS CHANGING. THE NEXT MOVE IS YOURS.
Shop H-BLITZ: White | Blue | Green — $99.90, 100 units in the first batch.
