My experience with them is that if you really turn loose on it, you're going to eventually break the internal bladder. If you're going with moderate force, they can last.
I'm not sure what country the OP is in, but I'll toss this into the free medical advice. See a physical therapist. I went to PT for a torn muscle in my right arm, and was reminded how much I don't know about strengthening support muscles and such. It may well be that a PT can help you minimize the pressure on those joints that are bothering you, and that's a long-term solution.
It's a matter of wear over time. I saw one burst while being kicked. It wasn't the first hard kick - it survived a few months before failing. It was an unholy mess in the corner of the dojo (had to lift mats, move equipment, dry carpet, etc.).
Indeed.
Don't know about them, but I've had a Century water filled hanging bag for over 25 years, similar to this. We have unloaded on that bag hard enough to break the chain twice over the years, and it is
Balrog, what are those circles I see on the mats there?
Maybe something to leash the kids to?
I wish!
Yes. I got them in rolls of 50 from the local FastSigns. We alternated red and blue, so when I need to really spread them out, I can say get on a red star. Average life in the heavy traffic areas of the mat is about three months, then I have to put down a fresh star.
If I ever do kids classes again, I'm definitely stealing that idea. Heck, I may break in and steal your actual stickers. Then you'd have to replace them more frequently!
