The BOSU Balance Trainer is a pretty popular choice for home gyms. It's generally known for being durable and great for balance exercises.

But, according to our research, some folks have run into issues with it losing air occasionally. This can sometimes be due to a missing or faulty air plug, which is important for keeping it inflated.

The manufacturer mentions that the BOSU is made from strong materials and can support up to 350 pounds. So, if everything is set up right, it should hold air pretty well.

However, if you find it consistently losing air despite following the setup instructions, it might be a good idea to contact customer service for help. They can guide you through fixing the problem or even replace it if necessary. Generally, it shouldn't be losing air all the time—so if it is, it's worth checking out.

From what we've found, lots of people use the BOSU ball for a long time without air retention issues, and they enjoy the stability it adds to their workouts. Just make sure to inflate it to the recommended pressure to minimize stress on the seams and reduce the risk of leaks.

In short, the BOSU Balance Trainer should keep its shape and pressure well during use. It's smart to check everything thoroughly when you first set it up and keep an eye on it for any signs of air leakage, at least at the start.

This way, you can ensure it stays a solid part of your workout routine.