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| Black
Light Leakproof No-Show Bikini
$25.00 CAD

Color: Black
Best Seller

Color: Black

Size:

Size:

Size and Fit Guide

Mix & Match: 3+ for $20 each
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Home / All Underwear / Light Leakproof No-Show Thong 3-Pack
Sale

Light Leakproof No-Show Thong 3-Pack

$60.00 CAD

$75.00

20% off
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3-pack underwear

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Absorbs about 1 regular tampon

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Invisible under clothes

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Perfect for daily wear

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Machine washable

| Twilight Navy/Sphere/Purple Heather
| Twilight Navy/Sphere/Purple Heather
| Twilight Navy/Sphere/Purple Heather

Absorbency: Light
Drop
Drop
Drop
Drop
Drop

Color: Twilight Navy/Sphere/Purple Heather Limited Edition

Size:

True to Size

•

Size:

Size and Fit Guide

Leakproof Underwear is Sales Tax Free in Canada*
Free Shipping on orders $100+

Shipping

Shipping
Processing Timelines

Please allow 1-2 business days for our warehouse team to pack and ship your order. During peak periods such as sales, holidays and product launches, please allow up to 4 business days for us to process your order.

Delivery Time

For the most up-to-date delivery time estimates, please refer to the shipping timeline at checkout. Delivery timelines vary depending on location and do not include processing times.

Shipping Charges

Orders over $100* CAD = Free Shipping (2-6 business days)
Orders under $100* CAD = $12 CAD Shipping (1-3 business days)
Orders delivering to NWT, Nunavut and Yukon are subject to $20 delivery fee.*After discounts, before shipping and taxes.
Easy Exchanges within 30 Days

Returns

Returns
Free Returns

Knix covers the return shipping fees for exchanges and refunds initiated through our Return & Exchange Portal. Exchange orders initiated through our Return & Exchange portal are also eligible for free shipping within the USA and Canada. Please note, the shipping fees on your original order are non-refundable.

Return Policy

Return policy varies by product, please check if your item is refund or exchange eligible by viewing our full policy here.

Sale & Last Call

Items discounted below 30% are eligible for size exchange or store credit. Items discounted 30% and above are final sale – no refunds, store credits, or exchanges can be accommodated.
Rewards Members Earn 60 Points

You May Also Like

Light Leakproof UltraThin No-Show Thong

$27.00 CAD

Light Leakproof No-Show Bikini

$25.00 CAD

Leakproof No-Show Thong

$32.00 CAD

Comfort-First Fit

This thong style sits lower on the hips with minimal bum coverage.

Worry-Free Protection

Our original leakproof technology offers a barely there feel while patented bonded edges help prevent side leaks.

Light Absorbency

Absorbs 1 regular tampon worth of liquid—perfect for light flow days, sweat and discharge, and backup protection for heavy flow days.

No-Show Style

Made from our signature buttery soft fabric with a wide, comfortable waistband. Wear it on its own or under your favorite pajamas.

Easy to Wash

Machine washable just like regular underwear.

Zoom

| Twilight Navy/Sphere/Purple Heather
| Twilight Navy/Sphere/Purple Heather
| Twilight Navy/Sphere/Purple Heather

How to Choose?

Essential

Drop
Drop
Drop
Drop
Drop
  • • Everyday Wear
  • • No leakproof protection
  • tsp
    0 tsp

Heavy

Drop
Drop
Drop
Drop
Drop
  • • heavy period days
  • • overnight protection
  • • light bladder leaks
  • tsp
    6-11 tsp
  • pad
    about 1.5-3 regular pads
  • tampon
    about 3-6 super tampons
  • cup
    about 1-2 menstrual cups

Light

Drop
Drop
Drop
Drop
Drop
  • • light period days
  • • sweat
  • • sweat and discharge
  • tsp
    about 1-3 tsp
  • pad
    about 1-3 pantyliners
  • tampon
    about 1-3 regular tampons
  • cup
    about 0.5 menstrual cups

Moderate

Drop
Drop
Drop
Drop
Drop
  • • moderate period days
  • • light bladder leaks
  • • sweat
  • tsp
    about 3-6 tsp
  • pad
    about 1-1.5 regular pads
  • tampon
    about 2-3 super tampons
  • cup
    about 0.5-1 menstrual cups

Ultra

Drop
Drop
Drop
Drop
Drop
  • • extra heavy period days
  • • overnight protection
  • • light bladder leaks
  • tsp
    13-17 tsp
  • pad
    3.5-4.5 regular pads
  • tampon
    7-9 super tampons
  • cup
    2-3 menstrual cups
PATENTED LEAKPROOF TECHNOLOGY

Built-in protection that feels like nothing at all

Our original Fresh Fix Technology® features a built-in absorbent liner absorbing about 1 regular tampon worth of liquid so you feel fresh and in-control.

Soft Top Layer

Soft Top Layer

Gently wicks away moisture while keeping you feeling fresh and odor-free.

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4.5
Rated 4.5 out of 5 stars
Based on 3,606 reviews
Total 5 star reviews: 2.7k Total 4 star reviews: 458 Total 3 star reviews: 167 Total 2 star reviews: 97 Total 1 star reviews: 143
91%would recommend these products
ComfortRated 4.5 on a scale of 1 to 5
EffectivenessRated 4.6 on a scale of 1 to 5
FitRated -0.1 on a scale of minus 2 to 2
Ease of UseRated 4.3 on a scale of 1 to 5
Write a Review (Opens in a new window)
3,606 reviews
  • Rated 2 out of 5 stars
    49 minutes ago
    Crotch Rides Up

    I have been wearing Knix Leak Proof thong for over a year. I can say they are made well. My issue with them is. mo matter what adjustment I try to make the crotch rides up in my pubic area. I am annoyed enough to stop buying them.

    Christine
    Verified Reviewer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 weeks ago
    Yes!!!

    I will only buy Knix underwear and these are a type that I like. They fit well and are super comfy ! Grab a pair today. I love this type as well. Can’t go wrong with any pair of underwear from Knix.

    Michelle K.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 weeks ago
    Awesome underwear!

    I will only buy Knix underwear and these are a type that I like. They fit well and are super comfy ! Grab a pair today.

    Michelle K.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    Perfect title

    I also like this thong, very comfortable hardly even know it’s and it’s reassuring to have the extra layer in the crutch of the panties

    Jocelyn C. M.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    Surprisingly comfortable

    Comfortable, cute, and served their purpose. Will be buying more.

    Maria Z.
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    1 month ago
    Love the underwear

    I love the kind light for working out. I bought white ones to wear under white shorts, but the liner is visible through (and is black). It defeats the purpose. I am disappointed

    Lianne G.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Great!

    Highly recommend as period protection

    Leilani P.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Super comfortable!

    Will definitely be purchasing more of these!!

    Dianne G.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    5 Stars

    J’adore!

    Eve
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Super comfortable

    Insanely comfortable and absorbs more than I need!

    Paulette S.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Love my knix!

    I swear by Knix underwear during my period (high rise for overnight, thongs for daytime). I have been using them for the past 5 years and my original pairs are still perfect and show no signs of wear (I've bought extra now to keep at my mom's house for when I'm travelling, etc) The medium fits perfectly - not tight at all but hugs perfectly (and is not restrictive in any way - something I'm very sensitive about during my period!) For reference - I'm 5'4 and 127 lbs (and have a decent shaped booty ;)). On heavier days, I wear these with a diva cup. On my easier flow days, I can wear these alone with no issues (this applies to both the thongs and the overnight high rise ones).

    Vittoria
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Love knix! Highly recommend!!

    I swear by Knix underwear during my period (high rise for overnight, thongs for daytime). I have been using them for the past 5 years and my original pairs are still perfect and show no signs of wear (I've bought extra now to keep at my mom's house for when I'm travelling, etc) The medium fits perfectly - not tight at all but hugs perfectly (and is not restrictive in any way - something I'm very sensitive about during my period!) For reference - I'm 5'4 and 127 lbs (and have a decent shaped booty ;)). On heavier days, I wear these with a diva cup. On my easier flow days, I can wear these alone with no issues (this applies to both the thongs and the overnight high rise ones).

    Vittoria
    Verified Buyer
    Was this helpful?