What Is the Lifespan of Period Underwear?

Here’s how long your period underwear will last you and what you can do to preserve their effectiveness for as long as possible.

One of the best aspects of period underwear, of course, is that it's reusable. The average menstruator will use up to 15,000 pads or tampons in their lifetime, adding up to a whole lot of waste. Period underwear is reusable making it an effective tool to help curb your individual waste. But once you have your period underwear you might begin to wonder, how long exactly will this last?

close-up of pink period underwear

How Long Will Period Underwear Last?

According to our experts in the product department, each pair of Kt by Knix period underwear has been wash-tested 50 times and are guaranteed to withstand the same treatment at home. The exact lifespan of the undies will vary depending on how and how often you wear and wash the underwear over time.

Keep reading for our tips on how to extend their lifespan. 

back view of pink period underwear 

How to Preserve the Lifespan of Period Underwear

Period underwear is your secret weapon, your competitive advantage, and maybe even your best friend, so it’s natural you want it to last as long as possible. Here are a few tips on how to preserve its lifespan so it serves you well into the future.

  1. Follow proper washing instructions. Here’s a blog post on the proper way to wash your period underwear.
  2. Always wash in cold water, as heat will break down the fibers faster.
  3. Air-dry your period underwear. (Unless they’re the Super Leakproof or Cotton Modal Super Leakproof underwear, in which case it’s safe to tumble-dry on low heat.)

woman wearing sweater and patterned period underwear

Once you feel that your underwear’s absorbent capacity no longer matches up with your needs, you should consider replenishing your underwear drawer with fresh new pairs of Kt leakproof period underwear. We have a number of styles to meet all your bleeding needs including full-gusset underwear for heavy bleeders, sleepover shorts for overnights and cotton lace bikinis for natural fiber lovers.  Your vulva will thank you.

Take good care of your leakproof period underwear, and they will serve you well for a long time.

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