Pickleball Paddle Core Materials: Honeycomb vs Foam

The core is the middle layer of a pickleball paddle, sandwiched between the two hitting faces. In our catalog, brands' core descriptions fall mostly into three groups: polymer or polypropylene honeycomb, foam, and honeycomb combined with foam. Of the 291 paddles that list a core material, 157 describe a polymer or polypropylene honeycomb, 98 describe foam with no honeycomb, and 21 describe both (PickleSwaps catalog, 319 paddles, October 2026).

USA Pickleball's rules don't name any core material. They require a paddle made of "rigid, non-compressible material" that meets the Equipment Standards Manual, and they limit how much power a paddle can produce. Below: what each core type is, what the rules say, the catalog numbers and how we counted them, and what manufacturers themselves claim about the differences.

What a paddle core is

A paddle is layered: a face on each side, a core between them, and, on paddles that have one, an edge guard around the rim. UPA-A's paddle rules define the edge guard as a strip on the perimeter "distinct from the paddle face and core" (UPA-A Paddle Specifications and Testing Requirements v.26.6). Manufacturer spec pages describe the same build. Six Zero says a carbon seam "fuses the top and bottom faces of the paddle," with a "16mm thick premium honeycomb polymer core" between them (Six Zero Double Black Diamond). JOOLA describes a vibration-damping film placed "between the core and surface" (JOOLA Perseus Double Vision).

Spec sheets list thickness as core thickness: Six Zero lists "Core Thickness 0.63" // 16mm" for the 16mm Double Black Diamond, and Ronbus lists "Core Thickness: 16mm" for the Tenon R1.16. How thickness changes feel is covered in our pickleball paddle thickness guide. This guide is about what the core is made of.

The main core types

Polymer / polypropylene honeycomb

This is the largest group in our catalog. Brands describe it in slightly different words: Onix calls the Recruit V4's core a "polypropylene honeycomb core" (Onix V4), and Six Zero calls the Double Black Diamond's a "honeycomb polymer core." Our catalog count puts both phrasings in the same class.

Foam (no honeycomb)

Foam cores use foam instead of honeycomb. The first two examples below combine more than one foam. Ronbus lists the Tenon R1.16's core material as "EPP+EVA Mortise and Tenon Joint" (Ronbus Tenon R1.16). Eleven Zero describes an "EPP foam core surrounded by soft EVA and hard edge foam" (Eleven Zero EZ Speed E16). CRBN calls the TruFoam Waves core "100% TruFoam" and a "seamless, high-density foam core" (CRBN TruFoam Waves).

Honeycomb + foam

Some paddles combine the two. 11SIX24 describes the Vapor Power as "a floating polypropylene honeycomb core surrounded by closed cell EVA foam" (11SIX24 Vapor Power).

Nomex and other cores

Only one paddle in our catalog lists a Nomex core: the Onix Z5 Graphite. Onix describes it as having a "graphite face and nomex core" (Onix Z5 Graphite). No paddle in our catalog lists an aluminum core. We couldn't find a primary source on the history of Nomex or aluminum cores, so this guide doesn't make claims about them.

What the rules say about core materials

Neither USA Pickleball document we checked names honeycomb, foam or any other core material. What they regulate is how the paddle performs:

• Material. Rule 3.D.4 of the 2026 Official Rulebook: "The paddle must be made of material deemed safe and not prohibited by these rules. Paddles must be made of rigid, non-compressible material meeting the criteria specified in the USA Pickleball Equipment Standards Manual" (USA Pickleball 2026 Official Rulebook). The manual's section 2.E.1 uses nearly the same wording (USA Pickleball Equipment Standards Manual, Revision 3.0, January 2025).
• No trampoline effect. ESM 2.E.6.f prohibits "Springs or spring-like material, flexible membranes or any compressible material that creates a trampoline effect." Power is measured as PBCoR (Paddle/Ball Coefficient of Restitution), with a not-to-exceed limit of 0.43 effective Nov. 1, 2025.
• A new core means a new name. ESM 2.E.7: "Paddles with different core material, surface material, or other significant differences must have a unique name or number." So a model sold with two different cores should carry two different names.
• It has to stay legal as it wears. ESM 2.F.2.a says paddles "will be required to be compliant to all requirements over the entire useful life of the paddle," including designs with "break-in periods, degradation or other gradual changes that affect paddle performance."
• No thickness limit. Rule 3.D.2: "There is no restriction on paddle thickness."

In pro events, UPA-A's rules apply to "all paddles used in professional UPA events." They list "core integrity" among the structural characteristics that must stay in their original state for a paddle to remain within its useful life (UPA-A v.26.6). For how the USA Pickleball tests work, see how USA Pickleball tests paddles. To check a specific paddle, use our USAP status tracker or UPA-A status tracker.

Core materials in our catalog

Method. These counts come from the PickleSwaps catalog, 319 paddles, October 2026. We count every paddle that has a core material listed (n = 291). Material classes are assigned by keyword matching on the brand-stated core description, not by testing the paddles. The rules are applied in order: a description that mentions foam, EPP or EVA and does not mention honeycomb counts as foam; honeycomb plus foam or EPP counts as honeycomb + foam; Nomex or aramid counts as Nomex/aramid; aluminum counts as aluminum; polymer, polypropylene or honeycomb counts as polymer/polypropylene honeycomb; anything else counts as other.

Two things to keep in mind. First, these are brand descriptions, and brands use their own trade names, so a description that uses only a trade name lands in "other." 9 of the 14 "other" paddles describe the core as carbon fiber (for example "T700 carbon fiber core"), which none of the keyword rules above matches. Second, because the foam rule only looks for the words foam, EPP or EVA without honeycomb, the foam class can include a polymer core described with a foam perimeter. Treat the classes as a rough map of how brands describe their cores, not a lab classification.

What manufacturers say about the trade-offs

We haven't tested these claims. They're the manufacturers' own words from their product pages, and each brand is describing its own paddle:

• Onix, polypropylene honeycomb: on the Stryker 4 Composite, "The polypropylene core provides the Stryker's incredible touch at the net, while the paddle's fiberglass face fuels the power" (Onix Stryker 4 Composite).
• Onix, Nomex: on the Z5, "The graphite face and nomex core give players superior feel of the ball."
• Ronbus, foam: on the Tenon R1.16, "No more honeycomb, no more plastic, and no more core crush to worry about."
• CRBN, foam: on the TruFoam Waves, "Forget core crush and inconsistent break-in periods," and the brand says its TruFoam technology "eliminates the old trade-offs of honeycomb paddles."
• Eleven Zero, foam: on the 16mm EZ Speed E16, "The same triple-density foam core as the 14mm models but with more room to compress. More forgiving on off-center hits."
• 11SIX24, honeycomb + foam: on the Vapor Power, the honeycomb-and-EVA build creates "an unmatched sweet spot and responsive feel."

In these examples, two of the foam-core pages (Ronbus and CRBN) market against "core crush," while the honeycomb pages talk about touch and feel. None of these pages publishes a test method that would let you compare one brand's claim with another's. The rules side is more concrete: whatever the core, a USA Pickleball approved paddle has to stay under the PBCoR limit and stay compliant "over the entire useful life of the paddle."

Putting it together

• The core is the layer between the two faces, and spec sheets list its thickness as core thickness.
• Polymer/polypropylene honeycomb is the most common core in our catalog (157 of 291), followed by foam (98) and honeycomb + foam (21).
• USA Pickleball doesn't name core materials. It requires rigid, non-compressible material, caps PBCoR at 0.43, and requires a unique name when the core material changes.
• Performance differences between core types come from manufacturer claims, not independent tests.

You can see each paddle's listed core material and thickness in the full paddle catalog. The other half of a paddle's build is the hitting surface, covered in pickleball paddle face materials. For weight, see how heavy should a pickleball paddle be.

Last updated: October 2, 2026