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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
Rewards Members Earn 0 Points

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Super Leakproof® Dream Short

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Home / All Underwear / Leakproof Cotton Modal Bikini

Leakproof Cotton Modal Bikini

$29.00 CAD

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Absorbs about 2 super tampons

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Soft cotton-modal blend

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Machine washable

Claire has 35

Claire has 35" hips, 24" waist and wears a Knix size S

Claire has 35

Claire has 35" hips, 24" waist and wears a Knix size S

Claire has 35

Claire has 35" hips, 24" waist and wears a Knix size S

Amber has 38

Amber has 38" hips and wears a Knix size M

Amber has 38

Amber has 38" hips and wears a Knix size M

Amber has 38

Amber has 38" hips and wears a Knix size M

| General

Claire has 35" hips, 24" waist and wears a Knix size S

Absorbency: Moderate
Drop
Drop
Drop
Drop
Drop

Color: Black

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 29 Points

"My favorite part of these leak-proof undies is the multiple cotton layering that makes me feel snug in the stomach and below — without spillage."

- Business Insider

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Comfort-First Fit

The classic mid-rise fit provides medium hip and bum coverage.

Moderate Absorbency

The quick-dry, extended liner absorbs approximately 2 super tampons worth of liquid.

Easy to Wash

Machine washable just like regular underwear.

Zoom

Claire has 35
Claire has 35
Claire has 35
Amber has 38
Amber has 38
Amber has 38
| 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

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4.6
Rated 4.6 out of 5 stars
Based on 804 reviews
Total 5 star reviews: 624 Total 4 star reviews: 102 Total 3 star reviews: 31 Total 2 star reviews: 20 Total 1 star reviews: 27
92%would recommend these products
ComfortRated 4.6 on a scale of 1 to 5
EffectivenessRated 4.7 on a scale of 1 to 5
FitRated 0.3 on a scale of minus 2 to 2
Ease of UseRated 5.0 on a scale of 1 to 5
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804 reviews
  • Rated 5 out of 5 stars
    1 month ago
    Love the fabric!

    Very soft and comfortable. Pants just slide on with this modal fabric. Very happy with this purchase. Wash very well.

    Lisa R.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Comfort pants

    So soft and comfortable, great when relaxing at home or in bed.

    Tanya N.
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    1 month ago
    Leakproof modal bikini

    My personal preference is to use high rise only. I find the bikini fits well but is not for my body form, I'm finding the band rolls down.

    Lily M.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    2 months ago
    Soft, but gusset was too thick

    I love Knix, have worn them for years…but I was disappointed with the thickness of the gusset for these ones. Ordered an alternative.

    Kim C.
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    2 months ago
    Need more LIGHT cotton options please!!

    WHAT HAPPENED TO YOUR COTTON LIGHT AND/OR ESSENTIAL BIKINI UNDERWEAR???

    I have purchased some in the past and now you only have heavier flow cotton options - what about everyday wear? Cotton breathes so much better.

    mara
    Was this helpful?
  • Rated 5 out of 5 stars
    2 months ago
    Confidence

    They are comfortable and I feel more. confident wearing them

    Wendy J. M.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 months ago
    Cotton Modal Bikini

    I loved it when you went to this new cotton fabric. It is so soft and has stayed soft comfortable despite numerous washings. They are comfortable, don't bind and don't roll. The amount of absorbency works great for me too. I had to have a stint put into one of my urethras following a kidney which was the result of a car collision. Even though it was removed 6 weeks later, it left the urethra open, hence the need for leakproof underwear. At least they are inconspicuous looking.

    I will still give the bikinis a 5 star rating even though they do not seem to be true to fit, at least for me. Based on the measurements I ordered a much larger size than I needed. I appreciated you allowing me to return and exchange for the correct size without having to pay all of the back and forth shipping. I will definitely be ordering them again.

    Kathy R.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 months ago
    My favourite

    These are my favourite pair of period undies so I stocked up. They fit great, are super comfortable and offer perfect protection on heavier days which makes them my go to.

    Stefanie M.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 months ago
    Comfortable and work well

    Very comfortable and work well

    Kerri P.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    5 months ago
    True comfort

    The liner looks thick but I don’t feel it. And I love that the fabric isn’t so slippery that my clothes slide around on top of them - rather, everything stays in place. I like these under jeans or leggings.

    Meg T.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    7 months ago
    Underwear

    I like the cotton ones the best.

    Sheryl M.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    7 months ago
    5 Stars

    I love how they fit🌟

    Sharon
    Verified Buyer
    Was this helpful?