Foam Core Pickleball Paddles: EPP, MPP & Full Foam

Start with the center, then look at where the foam sits

In a conventional build, polypropylene honeycomb fills most of the hitting area. Some newer paddles keep that honeycomb and add foam at the edge or throat. Full-foam designs replace the main center with EPP, MPP or another foam system.

Once you know the center core and foam placement, the generation label matters much less. The face, thickness, shape, finished weight and surrounding reinforcement can still change how the paddle plays.

Exploded pickleball paddle structure showing the face layers, core and handle connection

Conventional honeycomb core inside a pickleball paddle

Honeycomb centerPP honeycomb carries the main hitting area.

Foam-enhanced honeycomb core inside a pickleball paddle

Foam-enhancedHoneycomb remains, with foam added around selected zones.

Multi-material foam core construction inside a pickleball paddle

Foam / multi-materialThe main center can be foam, with other zones tuned separately.

EPP or MPP? The core label is only the starting point

If a spec sheet says only “EPP core” or “MPP core,” you still do not know the foam density, where the foam sits, the face layup or the finished weight.

PP honeycomb

PP honeycomb is still a common starting point in the paddles we make. When honeycomb is specified, 8 mm and 10 mm cell sizes are common project references.

EPP

EPP stands for Expanded Polypropylene. USA Pickleball’s current approved list includes EPP-core paddles as well as mixed builds such as EPP + EVA, so “EPP” can describe one part of a more complex core.

MPP

USA Pickleball currently lists some paddles as “Microcellular Polypropylene (MPP) foam.” But suppliers do not use MPP consistently. For a custom build, we confirm the supplier’s material sheet before putting an MPP description on the sample specification.

We would not spec a paddle as “EPP = control” or “MPP = power.” Foam density, placement, face layup, shape and finished mass can all move the result.

Core and secondary foam placement inside a pickleball paddle

With EVA or TPU, placement matters as much as the material name

Secondary foams can sit around the perimeter, in the throat, or in a support channel. A label such as “EPP + EVA” does not tell you which material is doing which job unless the build is documented.

CenterWhat fills most of the hitting area?

PerimeterIs a second foam wrapped around the edge for support or tuning?

Throat / channelIs foam used locally rather than as the main core?

USA Pickleball’s current approved list already includes examples labeled EPP + EVA and TPU + EPP. In a sample brief, we record the center, perimeter and throat or channel separately so the same core layout can be repeated.

Gen 4 and Gen 5 are not fixed build specifications

Friday Pickleball, a paddle brand, currently markets its full-foam Aura as Gen 4. LixiSports, a paddle manufacturer, uses Gen 4 for a honeycomb center with perimeter and throat foam, and Gen 5 for an EPP center.

That is why we do not build from the generation number alone. For a sample, we record the center core, any perimeter or throat foam, the supplier material, density, body thickness, face layup and target weight.

Mozkuib pickleball paddle and ball used for an on-court foam-core comparison

What changes first when players move to foam?

Impact feedback

Some long-time honeycomb users describe full-foam paddles as more muted at contact. Some prefer the quieter response; others miss the sharper feedback of honeycomb.

Core-crush concern

Some players try foam after dealing with crushed honeycomb or dead spots. Full foam removes honeycomb cell collapse from the equation, but bonding and surface wear can still become separate failure points.

EPP vs MPP feel

Players do not describe EPP and MPP in one consistent way. In finished paddles, the face, shape, mass and foam layout often change at the same time, so the core acronym alone is a weak explanation for feel.

If you switch back and forth and cannot repeat a difference, you do not need to choose a core from the label alone. For a broader paddle test, use the same back-to-back routine each time rather than comparing two unrelated models; our paddle selection guide covers that method.

Foam Core Pickleball Paddles: EPP, MPP, Gen 4 and Gen 5 Explained