Saw It On Social: Knix Leakproof Underwear

Sep 30, 2019

Two years ago, I reviewed Thinx Period Underwear and several readers asked me to review a similar company called Knix.  So when I went to replace my original Thinx purchase, I decided to give them a try.  Here’s my unsponsored, ungifted review of the leakproof underwear brand Knix.

 

Knix sells “leakproof” underwear for women who need absorbency.  The company recommends them for women on their periods, women with light bladder issues, or women who are pregnant/post-partum.  Depending on the style of underwear, the underwear absorb between 1/2 tampon (thongs) and 3 tampons (boy shorts) worth of liquid.

The Knix underwear are made from a smooth, thin fabric that feels almost like swim cap.  They fit very close to the body, almost like shape wear (I assume this is to prevent leaks), and wearing something that snug created a minor issue with breathability and ingrown hairs.  It wasn’t a big problem, but it was a noticeable issue.

For me, the primary difference between Thinx and Knix is this: Knix feel less bulky, because the absorbent material is noticeably thinner.  But I noticed that the Knix underwear felt wet at times, which is not a feeling that I’ve experienced with Thinx.  So you basically need to choose which is more important to you: less bulk or consistently feeling dry.

One of the things that I like about Knix is that they have embraced postpartum women.  They make a whole line of products –nursing tanks, leakproof bra pads, and stretchy undergarments — for an underserved market.

Bottom Line: Both Thinx and Knix are well made.  Both are comfortable to wear (the Knix move and bend a little better).  And both will keep you leak-free up to their absorbency limit.  Whether you choose Thinx or Knix is a personal preference situation.

A friend who needs light bladder protection swears by the Knix DreamShort.  As a thong wearer, I prefer the wider, VPL-free waistband on the Thinx thong and the continuously dry feeling.  But if I hadn’t already tried Thinx, I would find the Knix thongs more than acceptable as a backup period undergarment.

The price on both products hovers between $20 and $40 per pair, so they’re not cheap.  But I tend to think of them as “performance underwear,” since without I would be spending money on pads and liners.

Like all Saw It on Social products, I purchased three pair of Knit with my own money.  You can use discount codes to get 10% off your first order at Knix, or 10% off at Thinx.  Both make a good product.  If this is something you need, I would try both before committing, since underwear is such a personal decision.

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  1. Jessica C says:

    Great review. I’ve been thinking about purchasing some and couldn’t decide between the two, I think I’ll take your advice and try both.

  2. JTM says:

    Well this is disappointing – another brand I want to try that isn’t size inclusive. It’s so disappointing to be a pregnant plus size woman and find all these great brands who either don’t know or refuse to accept that plus size women bigger than a size 20 do get pregnant! *sigh*

    Looks like I’ll be sending them an email.

  3. JJ says:

    I prefer the Dear Kate brand of this type of product to Thinx. Have not tried this brand though.

  4. BN says:

    So, what happens to the liquid when you take off the underwear? Do you wring it out? Do you just wash the underwear in your washing machine separate from all of your other clothes? I mean, it goes SOMEWHERE right?

    • Belle says:

      I just toss them in the wash in a mesh bag with my other underwear because I wear them as a backup. If there is a lot of liquid, I rinse them out in the laundry room sink and then wash them.

  5. Nel says:

    Knix convert here from Thinx. I find Knix is way more comfortable, breathable, and LOOKS like regular underwear (for when you’re at the gym, doctor, etc.). I use them as backup to tampons, because I have a heavier flow.

    My only complaint – Knix stretches out significantly, so buy a full size or two down.

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