You’ll see a few names used for the same handy tool. Common terms include:

• Mini exercise ball or mini yoga ball
• Pilates ball or core ball
• Small stability ball, barre ball, or bender ball

These balls are typically 6–10 inches (about 15–25 cm) in diameter, made from soft, grippy material (often PVC), and designed to have a bit of “give.” They’re popular for Pilates, yoga, core training, balance work, and gentle support during guided exercises. If you’re browsing on Walmart.com, check the product title and description for the listed diameter (for example, 9 in or 25 cm) so you get the size that fits your routine.

Choose the size based on how you plan to use it:

• 6–8 inch: Great for hand grips, foot placement, and between-knees squeezes when you want a compact feel.
• 9–10 inch (around 23–25 cm): Helpful for core work, seated support, and placing behind the low back during Pilates moves.

Consider texture (a non-slip surface can help), firmness preferences, and storage/travel needs. A 25 cm ball is roughly 9.8 inches, which many users find versatile. On Walmart.com, review the listed diameter, photos, and customer feedback to understand scale and feel. If you’re unsure, starting around 9 inches often provides a balanced option for a mix of core, balance, and between-knees work.

Most users prefer a soft to medium firmness so the ball has a little give and grips well. A practical approach is inflating to about 80–90% of the stated diameter rather than making it rock-hard.

1. Identify the valve type (straw/plug or needle).
2. Inflate gradually, smoothing out major wrinkles but leaving slight compressibility.
3. Seal the plug firmly, wait a few minutes, then top off if needed.
4. Avoid overinflating (it can feel slippery and increase stress on seams).
5. Keep the ball at room temperature for consistent firmness.

Some listings include a straw or hand pump—check the “What’s included” section and photos on Walmart.com. Since preferences vary, adjust air slightly until it feels comfortable for your exercises.

A mini ball can add support or gentle instability to many moves. Here are a few ideas:

• Between-knees squeezes: Seated or in a bridge to encourage inner-thigh and core engagement.
• Dead bug hold: Lightly press the ball between hands and knees to create tension.
• Roll-down support: Place it behind the low back during controlled spinal articulation.
• Plank variations: Hands or forearms on the ball for added challenge (short holds).
• Hamstring presses: Supine, heel on the ball, press gently to activate the back of the legs.

Move slowly, use a non-slip surface, and stop if you feel discomfort. If you’re new to these exercises, consider guidance from a qualified fitness professional.

Simple care can help it last longer:

• Clean: Wipe with mild soap and water, then air-dry. Avoid harsh cleaners, bleach, or solvents that can damage the surface.
• Store: Keep in a cool, dry place away from direct sunlight, heat sources, and sharp objects. Avoid heavy items on top of it.
• Travel: Partially deflate to pack flat, and keep the plug/pump in a small bag so it’s easy to find.
• Inspect: Check seams and surface for wear. If you notice damage, it’s best to replace the ball for safety.

For model-specific care tips, review the product details and Q&A on Walmart.com.