What Are the Official Specs for Foam and Cloth Balls?

The World Dodgeball Federation (WDBF) mandates a 7‑inch (17.8 cm) diameter for both foam and cloth formats. Foam balls must be polyurethane (PU)‑coated with an internal pressure of 1.6‑1.8 psi (110‑125 mbar)¹. Cloth balls, meanwhile, are made of a thin canvas‑like material stretched over a foam core, and they must meet the same size and weight limits but are un‑pressurized².

How Do Foam Balls Perform on Different Surfaces?

• Indoor hardwood or gym floors: Foam balls bounce predictably, giving you a clean “catch‑or‑dodge” decision.
• Outdoor concrete or asphalt: The PU coating resists abrasion, keeping the ball’s bounce consistent even after dozens of hits.

Because the foam is soft‑filled, it reduces the sting factor on players—critical for middle‑school leagues where safety is a top priority.

Why Do Some Elite Teams Still Prefer Cloth Balls?

Cloth balls travel slightly slower and have a softer surface, which lets players execute tighter throws and tighter defensive formations. In the 2026 WDBF rulebook the cloth format also allows a “no‑stink” zone on the court, giving teams an extra tactical layer to exploit.

Top‑tier European squads have been championing cloth balls for the past two seasons because the slower flight gives them more time to read the opponent’s intent—a subtle edge in high‑level play.

Which Ball Is Safer for Youth and Recreational Play?

Foam balls win hands‑down on safety. The PU coating is non‑abrasive and the ball’s weight (~140 g) stays within the WDBF‑approved range, minimizing bruises and hand injuries. For middle‑school PE classes, the Major League Dodgeball guide recommends foam for all age groups.

What About Cost and Availability?

Both formats are widely available on Amazon and specialty sports stores, but foam balls tend to be slightly cheaper per set. A 6‑ball foam pack averages $30 USD, while a comparable cloth set can run $38‑$45 USD. Bulk discounts are common for tournament organizers, so price differences rarely affect elite teams.

How Should I Choose the Right Ball for My Team?

1. Identify your primary competition format. If you compete in WDBF‑sanctioned events that use the foam format, stick with foam.
2. Consider your player base. Youth leagues, school teams, and recreational groups benefit from foam’s safety profile.
3. Factor in your tactical style. If you run a slower‑tempo, high‑precision offense, cloth may give you a marginal edge.
4. Test both. Many vendors offer sample packs—run a quick 10‑minute drill with each to feel the difference.

What’s the Bottom Line?

In 2026 the foam ball is the all‑rounder: safer, more consistent, and budget‑friendly. Cloth balls are a niche choice for teams that thrive on slower, more controlled play and are willing to invest a bit more for that tactical nuance.

Related Reading

• Why Dodgeball Coaches Ignore AI — a deep dive into why gut feeling still rules the court.
• The Weak‑Side Defense Problem — learn how defensive positioning can dominate a match.
• Tournament Day Fuel — the nutrition plan that keeps you sharp from warm‑up to final whistle.

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