This is the first heavy bag that I've purchased. It is used daily by my son who is taking Karate lessons, and I use it a couple of times a week. So far it has held up well to the kicks and punches. It has one small tear that was a result of dropping the bag when we had to relocate it to a different part of the room. We wrapped some duct tape around this and things are good. (It's low on the bag in an area that is not usually struck.) 

The sand inside has settled a bit making the bottom of the bag hard, and the top very soft, however the middle part seems just right so we keep that part at the proper height for our punches. Otherwise the bag has held up fine. I would buy this again.