The Hidden Engine Inside Every Padel Racket: EVA Foam

When most players buy a padel racket, they ask about the carbon.

Is it 3K or 12K?

18K or 24K?

Far fewer ask a question that can be just as important:

What foam is inside it?

Hidden beneath the face of your racket is an EVA core that plays a major role in how the racket responds when the ball makes contact.

It affects how readily the racket compresses, how lively or direct the response feels, how much impact you feel through your hand and arm, and how forgiving the racket can be.

And this is why carbon specifications alone never tell you the whole story.

The Face and Foam Work Together

Think about a padel racket as a complete system.

The outer face influences how the racket flexes and responds, while the EVA underneath it compresses and recovers during impact.

Change either one and you can change the character of the racket.

An 18K carbon face paired with soft EVA can feel very different from the same face paired with a considerably harder EVA core.

So asking whether 12K, 18K or 24K is “better” without considering the foam underneath it misses half the conversation.

Soft EVA

Soft EVA compresses relatively easily when the ball makes contact with the racket.

The result is generally a softer, more forgiving response with accessible ball output—particularly when the player is not swinging at maximum speed.

Soft EVA can offer:

• Easier rebound
• A softer impact sensation
• Greater comfort
• A more forgiving response
• Easier depth at lower swing speeds
• Less demanding play over longer sessions

Who might prefer it?

Soft EVA can be particularly useful for:

• Beginners
• Intermediate players
• Players with compact or moderate swings
• Defensive or touch-oriented players
• Players prioritising comfort
• Anyone who simply prefers a softer racket feel

But there is an important misconception here.

Soft does not mean beginner.

Experienced and high-level players can also prefer softer constructions when they already generate plenty of racket-head speed themselves and want additional feel, rebound or comfort.

Medium EVA

Medium EVA occupies the space between the accessible response of soft foam and the firmer character of hard EVA.

The foam does not deform as readily as a very soft core, but it is still forgiving enough to provide a versatile response across different types of shots.

For many players, this creates a useful middle ground between comfort and directness.

Who might prefer it?

Medium EVA can suit:

• Improving players
• Balanced all-court players
• Players with moderate swing speeds
• Players who want additional precision without moving to an extremely firm racket
• Players who regularly transition between defensive and attacking situations

There is a reason medium constructions can be so versatile: they do not sit at either extreme.

Hard EVA

Hard EVA requires greater force to deform significantly.

At slower impact speeds, that can make the racket feel firmer and less lively. But when a player generates substantial racket-head speed, the firmer construction can provide a stable, direct response.

Hard EVA is commonly associated with:

• A firmer impact sensation
• Less accessible rebound at lower speeds
• More direct feedback
• Greater demand on timing and technique
• A response suited to aggressive, high-speed striking

Who might prefer it?

Harder constructions can make sense for:

• Advanced players
• Competitive players
• Powerful attackers
• Players with high racket-head speed
• Aggressive overhead players
• Players who prefer a firm, direct response

But that brings us to one of the biggest misunderstandings surrounding racket hardness.

Does Harder Automatically Mean More Powerful?

No.

A harder racket does not automatically make every player hit harder.

The outcome depends on the interaction between the player, the foam, the racket face and the speed of impact.

At lower swing speeds, softer foam can provide more accessible rebound because it deforms more readily.

At higher impact speeds, a firmer core can provide the stability and response that a powerful player is looking for.

So instead of saying:

Hard foam means power.

A better way to think about it is:

Harder foam rewards a different kind of impact.

The fastest racket on paper is irrelevant if its construction does not work efficiently with the person swinging it.

Soft Foam Isn't Just for Beginners

This deserves repeating.

Choosing a softer racket does not mean you are an inexperienced player.

High-level players generate considerable speed themselves. Some therefore choose softer or medium-soft constructions because they value feel, ball output or comfort.

NOX, for example, offers soft-EVA configurations even within performance rackets, illustrating why foam hardness cannot simply be treated as a beginner-to-professional scale. NOX

Likewise, multi-density constructions exist because manufacturers recognise that different densities can contribute differently depending on the impact. Bullpadel's MultiEva system is one example of this approach. Bullpadel

The real question is not whether the foam sounds more advanced.

It is whether it works for you.

FLO's Philosophy

At FLO, we don't believe the question should be:

“Which foam is best?”

We believe the better question is:

“Which foam matches the way you play?”

A player with a slower or moderate swing may find a soft EVA construction easier to use effectively.

A player generating very high racket-head speeds may prefer the firmer, more direct response of harder EVA.

Then there are all the variables around it: carbon construction, racket shape, balance, weight, hole pattern and internal structure.

That is why we don't believe a racket should ever be reduced to one specification.

From Marketing Terms to Measurable Behaviour

This is where FLO Lab becomes particularly important.

Rather than simply calling one foam “power” and another “control,” we want to investigate what actually happens.

How does rebound change?

How does vibration change?

How does the effective hitting area change?

And what happens when we combine different EVA constructions with different face materials?

Over time, controlled FLO Lab testing can help us build evidence around these relationships instead of relying entirely on industry terminology.

Because understanding a racket shouldn't stop at reading the specification sheet.

It should mean understanding why the racket feels the way it does.

And sometimes, one of the most important answers is hidden right inside it.