"Indoor" and "outdoor" pickleball is a bit of a misnomer. A lot of outdoor-style play now happens inside large facilities. So what actually determines which ball you need isn't whether you're standing under a roof. It's what's under your feet.

The Real Difference Is the Surface, Not the Location

The determining factor is the substrate you're playing on. Concrete or cement counts as an outdoor surface, even if it's technically indoors. Wood or other softer court surfaces count as indoor, even if you're playing outside. If you're picking a ball based on whether there's a roof over your head, you're asking the wrong question.

Hole Count and Construction

Indoor balls typically have 26 holes, and the holes themselves are a bit larger. They're usually made with two-piece injection molding.

Outdoor balls have historically had around 40 holes, though that's changing. Starting August 1st, USAPA rules are moving toward a 48-hole standard for outdoor balls, and the UPL (Ultimate Pickleball League) is already playing with 48-hole balls ahead of that shift.

The general reasoning in the sport: fewer, larger holes on an indoor ball behave more predictably in still air, while more, smaller holes on an outdoor ball help the ball resist wind and hold its flight path in open conditions.

Why Durability Differs

Concrete and cement are rough surfaces, and that roughness wears down a ball's surface faster than smoother surfaces do. Outdoor balls are built to be harder to handle that punishment, and some are made with single-piece rotational molding rather than two-piece injection molding, which tends to crack less, though it can still deform over time.

Indoor balls generally last a bit longer, not because they take less of a beating from the paddle, the force of contact is the same regardless of surface, but because the smoother surfaces they're played on are gentler on the ball itself.

The Rules (and the Social Reality)

This isn't just a performance preference. USAPA rules specify which ball is legal for which surface. You can't use an outdoor ball on an indoor court, and the reverse is true too.

There's also a social side to this. Show up to an outdoor court with an indoor ball and don't expect it to make it into the game. Ball snobs are a real thing in this sport. At the end of the day, you need to match the ball to the format you're actually playing.

Mint Sport's Cannonballz Lineup

Our Cannonballz line covers both formats. The Indoor version has 26 holes, comes in Fluorescent Ember (red), and is available in a 4-pack for $12.95 or a 10-pack for $19.95. The Outdoor version has 40 holes, comes in Fluorescent Green, and is available in a 4-pack for $14.95 or a 10-pack for $22.95.

Cannonballz is also the official ball of the UPL. With the USAPA's move toward 48-hole outdoor balls starting August 1st, it's a rule change worth watching if you play outdoor-format pickleball regularly.

Frequently Asked Questions

Can I just use an outdoor ball indoors if that's all I have?

You can technically hit with one, but it's not the right ball for an indoor surface, and in organized or competitive play it likely won't be accepted. It's worth having the correct ball for the surface you're actually playing on.

Does hole count actually matter, or is it just a spec?

It matters. Hole count and size affect how the ball handles wind and flight, which is a bigger factor outdoors than indoors. It's also tied directly to USAPA rules on which ball is legal for which format.

Do indoor or outdoor balls last longer?

Indoor balls tend to last longer, mainly because they're played on smoother surfaces. Outdoor balls take more surface abrasion from concrete or cement, which wears them down faster even though the paddle impact itself is the same either way.

Final Thoughts

Indoor versus outdoor isn't really about where you're standing. It's about the surface under your feet, and that single factor drives hole count, construction, and how long the ball will hold up. Match the ball to your court, not your location, and you'll avoid both the performance mismatch and the raised eyebrows from other players.