Those expanding balls are often called expanding spheres, breathing balls, or Hoberman spheres. They’re popular as sensory toys, fidget tools, and even for breathing exercises. You might see them used in classrooms, therapy sessions, or just for fun at home. Their unique design lets them smoothly expand and contract, making them both visually engaging and soothing to use.

An expanding sphere works through a series of interconnected joints and links that allow it to grow and shrink smoothly. When you gently pull on opposite sides, the structure opens up, expanding into a larger sphere. Pushing it together collapses it back down.

• It’s a simple, hands-on way to explore geometry and movement.
• Kids and adults enjoy the tactile experience and visual transformation.
• Some versions even include lights or glow-in-the-dark features for extra fun.

Expanding balls are super versatile! Here are a few popular uses:

• Sensory play for kids and adults
• Fidgeting to help with focus or stress relief
• Breathing exercises—expanding and contracting the ball can help visualize deep breaths
• Educational activities to demonstrate geometric concepts
• Group games or icebreakers in classrooms or parties

Many people find expanding spheres helpful for stress relief. The repetitive motion of opening and closing the sphere can be calming, similar to other fidget toys.

• They offer a gentle, hands-on way to redirect nervous energy.
• The visual aspect can be soothing as well.
• They’re often used in mindfulness activities or as a tool for relaxation.

Cleaning your expanding sphere is pretty straightforward:

1. Wipe it down with a damp cloth and mild soap.
2. Avoid soaking it in water, as that could affect the joints.
3. Let it air dry completely before using it again.