Your Bag

Your cart is empty

But you're full of potential..
Rewards Members Earn 0 Points

Suggestions

Top Picks

Super Leakproof® Dream Short

$40.80 CAD
$48.00
15% off

Color: Tapestry Limited Edition

Uplift Push Up Bra

$78.00 CAD
10% off Bra & Underwear Sets*

Color: Black

Revolution V-Neck Bra

$57.80 CAD
$68.00
15% off

Color: Warm Sand

Super Leakproof® Dream Boxer

$48.00 CAD

Color: Dark Cherry Stripe Limited Edition

Home / French Cut Underwear / Light Leakproof No-Show French Cut

Light Leakproof No-Show French Cut

$25.00 CAD

Mix & Match: 3+ for $20 each
Checkmark

Absorbs about 1 regular tampon

Checkmark

Invisible under clothes

Checkmark

Perfect for daily wear

Checkmark

Machine washable

Leslie has 49” hips, wearing KNIX XXL | Black

Leslie has 49” hips, wearing KNIX XXL

| Black
Leslie has 49” hips, wearing KNIX XXL | Black

Leslie has 49” hips, wearing KNIX XXL

Leslie has 49” hips, wearing KNIX XXL | Black

Leslie has 49” hips, wearing KNIX XXL

| General

Leslie has 49” hips, wearing KNIX XXL

Absorbency: Light

Light
Drop
Drop
Drop
Drop
Drop
about 1-3 regular tampons
Essential
Drop
Drop
Drop
Drop
Drop
No Absorbency
Moderate
Drop
Drop
Drop
Drop
Drop
about 2-4 super tampons
Heavy
Drop
Drop
Drop
Drop
Drop
about 4-7 super tampons

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

HOLIDAY SHIPPING

Give the gift of Knix! To receive your order by Dec 24th, please order by the following dates.

Toronto, Ottawa, Montreal, Winnipeg, Regina, Calgary, Edmonton, Vancouver
Standard & Expedited: Monday, December 22

Urban Centres (excluding the above)
Standard: Wednesday, December 17
Express: Sunday, December 21

Rest of Canada
Standard: Sun, December 14*
Express: Thu, December 18*
*YK, NWT, NT, NL, and remote areas across Canada.

For locations serviced solely by Canada Post, please allow at least 5 additional days due to rotating strikes. This applies to P.O Box and RR addresses.

To avoid any additional delays during the rotating strikes, we will use alternate carriers when possible.

Please note: Weather conditions and carrier issues may cause delays. Delivery dates are not guaranteed.

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 25 Points

Comfort-First Fit

A French-cut silhouette that sits at the natural waistline and provides medium bum coverage.

Worry-Free Protection

Our original leakproof technology provides a barely noticeable feel. 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

Leslie has 49” hips, wearing KNIX XXL | Black
| Black
Leslie has 49” hips, wearing KNIX XXL | Black
Leslie has 49” hips, wearing KNIX XXL | Black
| 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
    about 8-14 tsp
  • pad
    about 1.5-3 regular pads
  • tampon
    about 4-7 super tampons
  • cup
    about 1.5-3 menstrual cups

Light

Drop
Drop
Drop
Drop
Drop
  • • light period days
  • • sweat
  • • 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 4-8 tsp
  • pad
    about 1-1.5 regular pads
  • tampon
    about 2-4 super tampons
  • cup
    about 0.5-3 menstrual cups

Ultra

Drop
Drop
Drop
Drop
Drop
  • • extra heavy period days
  • • overnight protection
  • • light bladder leaks
  • tsp
    about 15-20 tsp
  • pad
    about 1.5-2.5 super pads
  • tampon
    about 7-11 super tampons
  • cup
    about 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.

Holiday Top Picks

Shop All Arrow Right

Pointelle Lace Tank

$38.25 CAD
$45.00
15% off

Color: Hush Limited Edition

Pointelle Sleep Short

$38.25 CAD
$45.00
15% off

Color: Hush Limited Edition

Fuzzy Slippers

$38.00 CAD

Color: Black

Super Leakproof® Dream Boxer 2-Pack

From 
$82.00 CAD
$96.00
Save $14

SculptRib™ Cotton Long Sleeve Top

$62.00 CAD

Color: Dark Cherry Limited Edition

SculptRib™ Cotton Midi Pencil Skirt

$70.00 CAD

Color: Dark Cherry Limited Edition

WingWoman Contour Bra

$75.00 CAD
10% off Bra & Underwear Sets*

Color: Black

Super Leakproof® Dream Short

$40.80 CAD
$48.00
15% off

Color: Dark Cherry Limited Edition

4.6
Rated 4.6 out of 5 stars
Based on 1,559 reviews
Total 5 star reviews: 1.2k Total 4 star reviews: 147 Total 3 star reviews: 71 Total 2 star reviews: 48 Total 1 star reviews: 45
91%would recommend these products
ComfortRated 4.6 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 4.7 on a scale of 1 to 5
Write a Review (Opens in a new window)
1,559 reviews
  • Rated 5 out of 5 stars
    3 minutes ago
    Perfect

    Love the fit, wish they send better colours the pack was mostly nude

    Sarah F.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    21 hours ago
    As above French cut

    Love the fit

    Linda D.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    2 days ago
    Good offer but…

    This was a good offer but even if it was mentioned in the ad that it was mix Colors, in the 3 packs I ordered I received 2 pairs of bright yellow, 1 pair bright red, and one pair mustard. My friend ordered the same product but she received more neutral colors.

    I will not order this kit again.

    Johanne G.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 days ago
    Best Leakproof briefs

    These briefs are exactly what I wanted. Fit really well. Material is so soft. Coverage is perfect.

    JA W.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 days ago
    Love the Light Leakproof French Cut briefs

    Love the material. Love the fit. Love knowing I am protected.

    JA W.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    3 days ago
    Leakproof undies

    So comfortable and so discreet. Great for working out.

    Judy B.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 days ago
    Leakproof underwear.

    Love your products.

    Nancy D.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    4 days ago
    So comfy!

    These are a great fit and stay in place all day. Highly recommend.

    Shaunna D.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    6 days ago
    Not thrilled

    They say they don’t ride up your bottom, but the French cut do. Very uncomfortable. Maybe full size is better?

    Renee M.
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    1 week ago
    Crotch width too wide

    Disappointed to have just received my order of multiple pairs . pantries are fine but the crotch is too wide and it bulks up! I’m not a small woman and the size was large ….

    What to do? Not useable

    Cyndee W.
    Verified Reviewer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    My fave underwear hands down!!

    Love these underwear.., the cut is comfortable and very flattering… the leakage coverage is perfect at 3 moderate..

    I only want to wear these knix underwear

    Kimberly D.
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    1 week ago
    French cut- not a good cut for me!

    Could not return ;( do not like French cut

    amanda d.
    Verified Buyer
    Was this helpful?