These are the smallest of all YBR® balls. Their small size makes them great for use in more detailed and focused work, including deep exploration of the joints, and deep bone stimulation. They're also perfect for travel! These balls are recommended for working your legs, getting into tight spots, and going up both sides of your spine.
Approximately 4" in diameter. Hold up to 350lbs.
Note: These balls will become damaged if deflated completely. They can be inflated with a YBR pump (recommended) or with any pump that uses a standard inflation needle.