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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 French Cut (Midnight)
Exclusive Reward

Light Leakproof French Cut (Midnight)

$25.00 CAD

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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

| Midnight
| Midnight
| Midnight
| Midnight
Light Leakproof French Cut (Midnight) | General

Light Leakproof French Cut (Midnight)

Absorbency: Light
Drop
Drop
Drop
Drop
Drop

Color: Midnight Limited Edition

Size:

True to Size

•

Size:

Size and Fit Guide

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.
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| Midnight
| Midnight
| Midnight
| Midnight
Light Leakproof French Cut (Midnight) | General

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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4.6
Rated 4.6 out of 5 stars
Based on 1,500 reviews
Total 5 star reviews: 1.2k Total 4 star reviews: 143 Total 3 star reviews: 67 Total 2 star reviews: 46 Total 1 star reviews: 39
91%would recommend these products
ComfortRated 4.7 on a scale of 1 to 5
EffectivenessRated 4.7 on a scale of 1 to 5
FitRated 0.1 on a scale of minus 2 to 2
Ease of UseRated 4.7 on a scale of 1 to 5
Write a Review (Opens in a new window)
1,500 reviews
  • Rated 5 out of 5 stars
    3 weeks ago
    Perfect fit and comfy. And no panty lines!

    I only wear Knix underwear. So many styles and colours to choose from. Great fit and fabric.

    They last a long time so are worth every penny.

    Christine M.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Super Comfy

    As always...amazing quality and super confortable!

    Martine B.
    Verified Buyer
    Was this helpful?
  • Rated 2 out of 5 stars
    1 month ago
    Leaks

    I love Knix. Half of my wardrobe comes from here: bras, sports bras, leggings, underwear, swimwear, loungewear, sleepwear, shapewear, thigh savers... You name it, I own it. This is why I am so heartbroken about the so-called leakproof underwear. I own over 10 pairs, different ones. They have different degrees of absorbency, most of them are deemed heavy. All of them leak. Every. Single. Time. I have resorted to buy another brand.

    I just ordered a mystery leakproof pack because it was on sale, but I use them for everyday wear. They are perfect for that, but I don't trust them anymore on my period. Even on light days, they can't handle it.

    Will still buy Knix, just not Leakproof.

    Aimée V.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Excellent

    I was a bit disappointed because I order the mystery pack and I got all 3 pairs the same colour brown. But I love the fit.

    Janet S.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Leakproof French cut

    great deal and the colours were fine.

    Francine H.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Love them

    Love the fabric, feel like you wearing nothing except for the back padding liner shows through when you wear tight leggings or paints. Otherwise I bought a load for travel, makes me feel more confident to have a nice trip without bringing change of pants 😜

    Annick G.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Exactly as stated

    Brown is an unusual color and not one I would have chosen, but they're quite nice

    Deborah W.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Worth every penny!!!

    I wish I would have made this purchase a long time ago! These are soo great and comfortable especially with my new diva cup experience as we speak. The only reason I jumped on it now is because I want my daughter to have better options when her turns comes in the next year or so❤️ Exceptional product. Thank you soo much.

    I’m so happy Costco now carries Knix🥳

    Lynne

    Lynne L.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    1 month ago
    Disappointed in colour

    Have to say that I was disappointed in my mystery pack. All 3 pair were the same brown colour.

    Fit was fine.

    Joanne J. H.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Leakproof

    Honestly not loving the cut but the protection I am looking for it helps.

    Karen G.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Mystery bundle

    Comfortable and easy to wear.

    LYNDA I. D.
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    1 month ago
    'Mystery' is definitely the word I would use

    Liked the colors I received but...they were not as described or pictured...more hipsters cut. I have bought this style before and loved them and fit me perfectly. These were low cut and not at all what I expected to receive. Very disappointed and let down that Knix would not let me exchange or get my money back.

    Paulette B. P.
    Verified Buyer
    Was this helpful?