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| Black
Light Leakproof No-Show Bikini
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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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Home / All Underwear / Ultra Leakproof Zones+® High Rise
Best Seller

Ultra Leakproof Zones+® High Rise

$39.00 CAD

Mix & Match: 3+ for $33 each
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Max absorbency level

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Absorbs about 9 super tampons

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Invisible under clothes

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Extra long liner

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Machine washable

Sarah has 38.5” hips, and wearing KNIX M | Warm Sand

Sarah has 38.5” hips, and wearing KNIX M

| Warm Sand
Sarah has 38.5” hips, and wearing KNIX M | Warm Sand

Sarah has 38.5” hips, and wearing KNIX M

Sarah has 38.5” hips, and wearing KNIX M | Warm Sand

Sarah has 38.5” hips, and wearing KNIX M

Clementine has 51” hips, and wearing KNIX XXL | Warm Sand

Clementine has 51” hips, and wearing KNIX XXL

Clementine has 51” hips, and wearing KNIX XXL | Warm Sand

Clementine has 51” hips, and wearing KNIX XXL

Designed with extra long protective coverage in the front & back | General

Designed with extra long protective coverage in the front & back

Made with soft, stretchy fabric that’s quick dry for your comfort | General

Made with soft, stretchy fabric that’s quick dry for your comfort

Washes just like regular underwear | General

Washes just like regular underwear

Sarah has 38.5” hips, and wearing KNIX M

Absorbency: Ultra

Ultra
Drop
Drop
Drop
Drop
Drop
about 7-9 super tampons
Essential
Drop
Drop
Drop
Drop
Drop
No Absorbency
Moderate
Drop
Drop
Drop
Drop
Drop
about 2-3 super tampons
Light
Drop
Drop
Drop
Drop
Drop
about 1-3 regular tampons
Heavy
Drop
Drop
Drop
Drop
Drop
about 3-6 super tampons

Color: Warm Sand

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 39 Points

"If you have a heavier flow, the Ultra Leakproof Zones+ High Rise is one of our favorite styles for day one of your bleed."

- StyleCaster

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Comfort-First Fit

High-rise silhouette with medium hip and bum coverage for a secure feel.

Worry-Free Protection

Features an extra-long liner that runs high in the front and up the back. Patented 360 LeakSeal™ technology provides leakproof protection at every edge.

Ultra Absorbency

Absorbs 9 super tampons worth of liquid—great for heavy flow days, overnight protection, and light bladder leaks.

No-Show Style

Made from our signature buttery-soft PerformaStretch® fabric, it appears invisible under clothing.

Easy to Wash

Machine washable just like regular underwear.

Zoom

Sarah has 38.5” hips, and wearing KNIX M | Warm Sand
| Warm Sand
Sarah has 38.5” hips, and wearing KNIX M | Warm Sand
Sarah has 38.5” hips, and wearing KNIX M | Warm Sand
Clementine has 51” hips, and wearing KNIX XXL | Warm Sand
Clementine has 51” hips, and wearing KNIX XXL | Warm Sand
Designed with extra long protective coverage in the front & back | General
Made with soft, stretchy fabric that’s quick dry for your comfort | General
Washes just like regular underwear | 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
FRESH FIX TECHNOLOGY®

Built-in protection that feels like nothing at all.

Absorbs about 7-9 super tampons worth of liquid.

Soft Top Layer

Soft Top Layer

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

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4.0
Rated 4.0 out of 5 stars
Based on 1,144 reviews
Total 5 star reviews: 679 Total 4 star reviews: 150 Total 3 star reviews: 106 Total 2 star reviews: 77 Total 1 star reviews: 132
76%would recommend these products
ComfortRated 4.1 on a scale of 1 to 5
EffectivenessRated 3.9 on a scale of 1 to 5
FitRated 0.1 on a scale of minus 2 to 2
Ease of UseRated 4.4 on a scale of 1 to 5
Write a Review (Opens in a new window)
1,144 reviews
  • Rated 1 out of 5 stars
    3 weeks ago
    1 Star

    Horrible cut - super bulky … feels like a diaper. Would not recommend

    NICOLE
    Verified Buyer
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  • Rated 5 out of 5 stars
    3 weeks ago
    Underwear

    Great!

    Cecilia L.
    Verified Buyer
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  • Rated 5 out of 5 stars
    3 weeks ago
    Absorbant et confortable

    Confortable et très utile. L’essayer c’est l’adopter.

    Ariane C.
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    3 weeks ago
    Works great!

    These work great! One thing I noticed since the protection goes all the way to the top of the waistband in the back is that all this stiff padding makes my butt go numb! I know this sounds strange, but in all 3 pairs multiples wearing sit happened, not in my other Knix!

    Jane O.
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    1 month ago
    Not happy

    Would not recommend. Ride up and also roll down. Really frustrating can’t return and get a refund

    Christin M.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    1 month ago
    Déçu par la grandeur

    Plus petite que les autres modèles pour la même grandeur

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

    Love all my knix! Dont know what I’d do without them!

    Jane
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    1 month ago
    only one request to make them great

    I have purchased this after wearing other brands. The other brands taught me to buy a bigger size and wear them backwards, it really does work, but you have to bunch up the extra material in the front. would love to be able to get them with the panel going all the way up the front, then I could buy my correct size and wear them the correct way. I love the material. I will keep checking to see if you add a full front panel. Thanks.

    cindy b.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Ultra leak underwear

    They fit well and I am very satisfied

    Margaret F.
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    1 month ago
    It leaks!

    I wore it on day one of my period and it leaked.

    Caroline O.
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    1 month ago
    It is not leakproof

    I wore this to work and regretted it so much!It leaked! I had brought an extra pair just in case and the extra pair leaked too. Beyond disappointed.

    Caroline O.
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    1 month ago
    Good but…

    These are comfortable and soft and absorbent. I only wish the front of the absorbent part was longer/went higher. After wearing them all day at work, I was close to having a leak.

    Rachael Y.
    Verified Buyer
    Was this helpful?