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Sale

Light Leakproof No-Show Thong - Last Call

$17.50 CAD

$25.00

30-40% off

Absorbs about 1 regular tampon

Invisible under clothes

Perfect for daily wear

Machine washable

Color: Cavassa

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.

Last Call Return Policy

Sale & Last Call

Our Sale Policy

Here's how returns and exchanges work for sale items.

  • Items discounted up to 30% are eligible for a size exchange or store credit
  • Items discounted above 30% are final sale. No refunds, store credits, or exchanges
  • Not sure where your item lands? Chat with us and we'll check for you

Still have questions? View our full policy here.

Rewards Members Earn 17 Points

"I was immediately hooked. Knix's absorbent underwear provides backup protection by holding up to one tampon of liquid"

- Glamour

Product Description

So thin, you’ll forget you’re wearing anything. Our original leakproof technology offers a barely-there feel while absorbing about 1 regular tampon or pantyliner worth of liquid. Patented bonded edges help prevent against side leaks.These underwear feature our signature buttery soft fabric. No show construction is designed to be invisible under clothes, including workout leggings. Our original leakproof technology is perfect for everyday wear (think sweat, discharge and light leaks), backup protection during heavier days or on its own for lighter days.

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

Buttery-soft and smooth fabric gives a seamless look and feel. Disappears under clothes, even leggings.

Easy to Wash

Machine washable just like regular underwear.

Zoom

| Cavassa
| Cavassa
| Cavassa
| General
 | General

How to Choose?

Essential

  • Days you don’t need leak protection. Everyday freshness and moisture wicking.
  • tsp
    0 tsp

Heavy

  • Extra peace of mind. For the first days of your cycle, light bladder leaks, or a full night's sleep without a leak.
  • 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

  • Daily freshness. For sweat, discharge, period spotting, or backup protection.
  • tsp
    about 1-3 tsp
  • pad
    about 1-3 pantyliners
  • tampon
    about 1-3 regular tampons
  • cup
    about 0.5 menstrual cups

Moderate

  • For mid-cycle flow, surprise cough or sneeze leaks, or a really sweaty spin class.
  • 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

  • Ultimate peace of mind. For the heaviest period days, light bladder leaks, unexpected postpartum flow, or overnight protection.
  • 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
4.6
Rated 4.6 out of 5 stars
Based on 2,581 reviews
Total 5 star reviews: 2k Total 4 star reviews: 305 Total 3 star reviews: 96 Total 2 star reviews: 62 Total 1 star reviews: 74
Reviews Summary
Customers say these thongs are comfortable and lightweight, with many finding them perfect for light protection and gym wear. Many reviews mention sizing inconsistencies, with most recommending sizing up as they tend to run small and fit tighter than expected. Common feedback includes praise for the comfortable feel and confidence they provide. Some note concerns about the protective liner placement, with a few mentioning it doesn't extend far enough back or causes gapping in the crotch area. While most appreciate the no-show design and leak protection, some find the edges dig in or the waistband sits too low. Reviews are mixed on durability, with some reporting stretching over time.
93%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 -0.2 on a scale of minus 2 to 2
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2,581 reviews
  • Rated 5 out of 5 stars
    3 minutes ago
    Life changing

    Honestly don’t know what I was doing all these years without them. Taken the stress of bleeding through completely off the table.

    rachel f.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Thong 3-Pack
  • Rated 5 out of 5 stars
    4 days ago
    Love

    I bought these because I’m a sweaty person. I don’t wear them for leakproof periods. However, they work exactly as I had hoped. I love them, and I have quickly replaced all of my thongs with these!

    For reference, I’m 5’5” and 140#. I order size XL because I hate when my underwear is even the slightest bit tight. I could definitely do size large, or maybe even size medium, but I prefer a roomier version.

    Jill M.
    Verified Buyer
    Reviewing
    POS - Light Leakproof No-Show Thong 3-Pack (ZSkus)
  • Rated 5 out of 5 stars
    6 days ago
    Favourite Underwear

    These are the perfect mix of comfortable, functional and no show. Wear them even when I’m not in my period as their great for working out or add protection if you can’t cross your legs when you sneeze 😜

    Jenn B.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Thong
  • Rated 5 out of 5 stars
    1 week ago
    The best basics

    Love these. Comfortable and discreet.

    Selen S.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Thong
  • Rated 5 out of 5 stars
    1 week ago
    Comfy

    I haven’t tried with a period but it’s comfy just wearing in a hot day

    Kamila Z.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Thong 3-Pack
  • Rated 5 out of 5 stars
    4 weeks ago
    Best panties EVER!!!

    I am a woman in my young 50's and I have been wearing these panties for over 10 years and they are so comfortable, durable and LEAKPROOF.

    Dawn C.
    Verified Buyer
    Reviewing
    POS - Light Leakproof No-Show Thong 3-Pack (ZSkus)
  • Rated 5 out of 5 stars
    1 month ago
    Fantastic!

    I love these underwear! They are absolutely fantastic for the lighter days of my period, and they feel so comfortable. I will absolutely be purchasing more of these.

    Haydn W.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Thong
  • Rated 5 out of 5 stars
    2 months ago
    Comfort

    They are light weight absorption and are very comfortable.

    Angela K.
    Verified Buyer
    Reviewing
    POS - Light Leakproof No-Show Thong - Last Call
  • Rated 5 out of 5 stars
    2 months ago
    Great!!

    Work very well and comfortable.

    Carol J.
    Verified Buyer
    Reviewing
    POS - Light Leakproof No-Show Thong 3-Pack (ZSkus)
  • Rated 5 out of 5 stars
    2 months ago
    Perfect

    works for light leaks and super comfy

    Justene L.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Thong
  • Rated 5 out of 5 stars
    2 months ago
    Love these no show thong

    Loving these had a bay last year and tampons don’t feel great right now and these have been a lifesaver when I had light periods after getting an iud. Can wear all day without a second thought and they feel great.

    RaeAnn A.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Thong 3-Pack
  • Rated 5 out of 5 stars
    3 months ago
    They work!

    Comfy, stylish & does the trick!

    Thanks!

    Nancy S.
    Verified Buyer
    Reviewing
    POS - Light Leakproof No-Show Thong 3-Pack (ZSkus)

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