The short answer is: a year
Boxer shorts are made of cotton and synthetic materials, which means they don’t last as long as many other things you might buy. They are meant to be worn way more often than any other piece of clothing. They are used for all kinds of activities, you can go hiking or hang out with friends before. But if you’re looking for something to last longer than that, there are some things you can do to make sure your boxers don’t fall apart too soon:
Always wash them in cold water and hang dry them instead of using the dryer.
If they start to show signs of wear and tear (rip, hole), replace them! There are plenty of options out there, and they’ll fit just fine!
Choose a pair that is made up of 100% cotton fabric – just make sure it’s not super thin like some cheap brands might use so it doesn’t get stretched out too quickly over time!
Make sure that the elastic is not heated under a hot iron to not lose its elasticity
Choose a size that is comfortable, such that you cannot grow out of it.