Ive had them for two weeks now and I’ve flipped over and had a hard fall and I’m 5-11 about 240 pounds. My mother in law flipped over who is 75 years old, my 17 year old 6-3 200 pounds flipped over and my 14 year old 5-9 135 pounds flipped over. If I had to do it again I would not buy this. And now everyone that comes over I tell them to be super careful not to get hurt.