Essential Leakproof Thong
leakproof thong
leakproof thong
leakproof thong
leakproof thong

Essential Leakproof Thong

Use code BUNDLE to buy 3, get 25% off.
Color: Black
Size: XS

Leakproof Essential Thong Undies

ONDR Thong period underwear and incontinence underwear.

I see London. I see France. You need some ONDR underpants--- with no visible lines. Bonus? You can relax when you don't have to worry about wet surprises! PP Promise.

Our Essential line has a longer gusset and hypoallergenic waistband with the same, doctor designed,  leakproof technology. 

Leakproof and worry-proof at greater than 6 tsp.

  • Lining : 81% modal + 13% alginate fiber + 6% spandex 
    Body : 70% nylon + 30% spandex 
    Gusset : 100% polyester; 85% polyester + 10% elastane + 5% polyurethane

    Negative testing for PFAS! 

    Machine wash cold with mild detergent. Do not bleach. Lay flat to dry.


Standard Shipping in the US (3-8 business days) by USPS - $6

Priority Shipping by FedEx (2-4 business days) - $10 

For orders over $50, standard shipping within US - FREE

Shipping to Canada (10-14 business days) by USPS/Canada Post - Calculated at check out


Easy! Throw them in the washing machine on cold with mild detergent and lay flat to dry. Avoid fabric softeners, bleach, ironing, or other high temperatures.

Customer Reviews

Based on 5 reviews
Janet G. (Glendale, US)
Life changing

I started running and noticed that i would leak (I gave birth to 3 kids). Discovered these underwear while trying to Google a solution. So glad i got these! Now I run w/o having to worry and customer service is amazing to boot! So grateful for these!!

Vicki G. (High Point, US)

I purchased these based on reviews and was hopeful that they would work! I was gratefully surprised with them, saved me from being uncomfortable! Love the fit, material and quality! Highly recommend these so it’s back to the gym!

A.A. (Fayetteville, US)
Will DEF be purchasing more!

I am currently pregnant with my second and the first child ruined my pelvic floor. I have used other brands of "period" underwear prior to both pregnancies, but never for the occasional leak.

I came across Ondr and figured it wouldn't be a bad product to try during the final stages of pregnancy, when the urge to pee is strong 24/7, I am chasing a toddler around and am not as quick to make it to the bathroom when I need to.

The stretch on these are heavenly- no diaper feeling, no odor, wet feeling, or leaks! It's one less thing to worry about. I will certainly be purchasing more!

Shayna C. (Edmonton, CA)
So worth it!! Best product and best customer service!

So first I should say I've tried all of the popular period underwear brands out there. They were good but just not quite perfect. I went on a hunt found this company which at the time didn't ship to Canada. I sent them an email or a chat or something saying "wish you shipped to Canada" and that was it, and they emailed me back saying that they had had a few requests for Canadian shipping and (I'm not kidding) they added the option to ship to Canada, immediately. I bought three pairs instead of one since I had to pay for shipping I figured might as well get more in one order. The items arrived in a timely manner and they even included a complimentary sleep mask which is so cute. Now about the product.. they are literally the best I've tried and I've tried a few. The period thongs have the most absorbency available on the market I think (I've looked, for hours), the absorbent pad comes up higher than most other brands which is nice and they are actually so comfortable and remain so after washing. Literally love them. I was blown away.

Lisa T. (Liverpool, US)
So comfortable

The new sizing is great. Very comfortable with added security. These are great!

ONDR Standard


Doctor designed


PLANT-based liner




Leak proof



Try it Risk Free!

ONDRwear is the doctor designed super-sleek, pee proof underwear you need in your life if you sometimes pee a little doing stuff you totally used to be absolutely fine doing without peeing a little like, oh I don’t know, laughing or sneezing but I’m not bitter about it or anything cause I got ONDR and ONDR incontinence underwear is the jam.

Protective underwear that is moisture wicking with maximum protection for whatever is coming out.

#Wegotyou whether you need us once a month or 24/7/365.

Free Shipping on Orders Over $50

Doctor designed

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Caring for Your Health