This really depends on whether or not you need to clean it. I have a pair of lifters that I don't use for strenuous activities so the bag I store them in honestly never needs to get washed. My trainers on the other hand typically give their bag odor so I have to wash it more often. Not all of them are machine washable but mine is, so make sure you take a look at the manufacturer's recommendation before tossing it in your washer.