Spri Ultraball

The SPRI® Ultraball™ has superior performance and maximum durability which help make it the safest and most reliable stability ball on the market today. It's made of a heavier, thicker-gauge material than other balls, so it's more resistant to stretching or deforming and ideal for use in the most demanding club environments. The dimpled surface offers a 360 degree body-traction effect. Slow-deflate up to 600 lbs. Choose between 55cm or 65cm. Includes a free downloadable exercise guide.

SPRI® Ultraball™ Features:

• Superior performance and maximum durability
• Safest and most reliable stability ball on the market today
• Thicker-gauge material
• Resistant to stretching and deforming
• Ideal for the most demanding club environments
• Dimpled surface for extra traction
• Slow-deflate up to 600 lbs.
• Downloadable exercise guide