I'm a big fan of Trideer stability balls because they're so thick and supportive. I had a herniated disc in my lower back that no other method was able to address. I ordered a L ball that fixed my back when I arched my back across it. I reordered this ball after years of using the other one. Unfortunately this one was the S size, even though my order says I ordered a L. If I had checked it in time, I could have exchanged it for the right size. But I was delayed in checking it and missed the window of time. However, it is definitely a nice, thick, high quality ball.
Rating:
[4 of 5 Stars!]