I've gone through two of these, all in the last month! The first one tore within two days. I was under the impression that it was defective, so I returned it immediately. The second bag I received lasted a mere week before the brittle canvas tore yet again. I made the fatal mistake of trying a different Everlast bag, and the zipper at the top popped right off after a month. Simply not a brand for powerful punchers! If you're going to go with Everlast at least go with their speed bags and gloves, which are far more reliable.