If you’re serious about improving your velocity, arm health, and throwing mechanics, plyo balls are one of the most effective tools you can use.
But not all plyo balls are the same.
In this guide, we break down what actually matters – and which plyo balls are worth it for baseball players.
What Are Plyo Balls?
Plyo balls (short for plyometric balls) are weighted balls used to improve:
- Arm speed
- Mechanics
- Deceleration strength
- Velocity
- Armhealth
- Warmup
They are a key part of modern throwing programs, especially popularized by programs like Driveline Baseball.
What Actually Matters When Choosing Plyo Balls
Most players focus on the wrong things. Here’s what matters:
1. Weight Range
You need both:
- Underload (lighter than a baseball for speed)
- Overload (heavier than a baseball for rate of force devlopement and warmup)
Typical range:
- 100g – 2000g
2. Feel & Grip
- Too hard → too close to a baseball, poor feedback
- Too soft → difficult to throw and the heavier balls turn solid
You want controlled compression.
3. Durability
Cheap balls break quickly, especially with wall drills.
4. Availability (Underrated)
Many brands ship from the US → long shipping, customs, high costs.
This is where European options have a huge advantage.