These safe, heavy-duty, slow-deflate quality SPRI® Xercise Balls™ are durable enough to withstand diverse training applications in any club environment. Elite (slow-deflate up to 500 lbs.) Xercise Balls™ were designed for heavy use in all workout environments.
Awesome Stability Ball! Review by Sean
I ended up swapping out my office chair for this ball, and absolutely love it. Now, for 8+ hours every day I can feel my core getting stronger. I can also do some very light ab exercises with it as I'm working. It's a great way to start losing some of that unwanted belly fat. Overall I'm extremely pleased with it! (Posted on 7/27/11)