Skip to content

Menu

Your Bag

Your cart is empty

But you're full of potential..

You Might Also Like

Color: Black

Size:

Size:

Rewards Members Earn 0 Points
New & Improved

Super Leakproof® No-Show High Rise

$36.00 USD

Mix, Match & Save: 3+ for $25 each
Checkmark

Now absorbs about 6 super tampons

Checkmark

2" added to gusset for extra protection

Checkmark

Invisible under clothes

Checkmark

Machine washable

Ashley has 39” hips and wears KNIX S | Black

Ashley has 39” hips and wears KNIX S

| Black
Ashley has 39” hips and wears KNIX S | Black

Ashley has 39” hips and wears KNIX S

Ashley has 39” hips and wears KNIX S | Black

Ashley has 39” hips and wears KNIX S

| General

Ashley has 39” hips and wears KNIX S

Color: Black

Size:

True to Size

Size:

Size and Fit Guide

Build Your 3-Pack

Ashley has 39” hips and wears KNIX S | Black

Super Leakproof® No-Show High Rise

Color: Black

Size:

Size:

Ashley has 39” hips and wears KNIX S | Black

Super Leakproof® No-Show High Rise

Color: Black

Size:

Size:

Ashley has 39” hips and wears KNIX S | Black

Super Leakproof® No-Show High Rise

Color: Black

Size:

Size:

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. Once an order is placed, we cannot guarantee any address updates, order changes or cancellations. Orders placed on Friday after 1PM will not be shipped until the following Monday.


Split Shipments

Most orders will ship from a single warehouse. However, we occasionally ship from a combination of warehouse locations, so you may receive your order in multiple parts. If items from your order ship in separate packages, we’ll send you tracking information for each package when it becomes available.

Delivery Timelines

For the most up-to-date delivery time estimates, please refer to the shipping timeline at checkout. Delivery timelines do not include processing times. See above for details. All transit times are measured in business days which are Monday-Friday, excluding holidays.

Please note, all shipping timelines are estimates and are not guaranteed.

We are not able to ship to US territories (including Puerto Rico, U.S. Virgin Islands, Guam, Northern Mariana Islands and American Samoa) at this time.

Easy Exchanges within 30 Days

Returns

Returns

Sale & Last Call

Items discounted 30% and below are eligible for size exchange or store credit. Items discounted above 30% and above are final sale – no refunds, store credits, or exchanges can be accommodated.

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.

Rewards Members Earn 36 Points

"Knix actually devised a super thin nylon-Spandex pair which is virtually invisible under clothing."

- Business Insider

Product Description

Total security from morning to night. Upgrade your cycle with the Super Leakproof No-Show High Rise, engineered for those who prioritize extra coverage and comfort. The extended gusset provides 360-degree protection against leaks, making it an ideal choice for heavy days or postpartum recovery. Crafted from moisture-wicking, anti-odor fabric, it keeps you dry and fresh without the bulk of a pad. Ditch the disposables for this sustainable, high-performance period solution that flatters your curves and stays in place.

Comfort-First Fit

Sits at the natural waistline and provides medium bum coverage.

Worry-Free Protection

Patented bonded edges help prevent side leaks.

Heavy Absorbency

Absorbs 6 Super tampons worth of liquid—perfect for heavy flow days, overnight protection, and light bladder leaks.

No More Panty Lines

Made from our signature buttery-soft fabric and designed to be invisible under clothes, including leggings.

Easy to Wash

Machine washable just like regular underwear.

Zoom

Ashley has 39” hips and wears KNIX S | Black
| Black
Ashley has 39” hips and wears KNIX S | Black
Ashley has 39” hips and wears KNIX S | Black
| General

How to Choose?

Essential

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

Heavy

Drop
Drop
Drop
Drop
Drop
  • 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

Drop
Drop
Drop
Drop
Drop
  • 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

Drop
Drop
Drop
Drop
Drop
  • 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

Drop
Drop
Drop
Drop
Drop
  • 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
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 3-6 super tampons 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.

4.6
Rated 4.6 out of 5 stars
Based on 6,219 reviews
Total 5 star reviews: 5k Total 4 star reviews: 673 Total 3 star reviews: 250 Total 2 star reviews: 141 Total 1 star reviews: 196
93%would recommend these products
FitRated 0.2 on a scale of minus 2 to 2
ComfortRated 4.7 on a scale of 1 to 5
EffectivenessRated 4.6 on a scale of 1 to 5
Ease of UseRated 4.8 on a scale of 1 to 5
6,219 reviews
  • Rated 5 out of 5 stars
    3 minutes ago
    Super leakproof No-show High Rise

    Very comfortable

    Cheryl G.
    Verified Buyer
  • Rated 5 out of 5 stars
    15 hours ago
    Game changer

    Absolutely obsessed with them, so comfy, and makes me almost forget it’s that time of the month!

    Kim R.
    Verified Buyer
  • Rated 5 out of 5 stars
    Yesterday
    Perfect

    Bought them for that heavy perimenopause period. Worked great when it was a week of heavy bleeding. Not so much when it was a weeks worth of bleeding in a day but held up 5 hours which is amazing!

    Nadine D.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 days ago
    Love the smooth texture

    No panty lines

    Debbie C.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    5 Stars

    Great fit, comfortable.

    Jamie
  • Rated 5 out of 5 stars
    2 weeks ago
    Excellent

    I find these underwear to be everything they are advertised. Thank you so so much for making them.

    Sherry C.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 weeks ago
    Adore

    J'adore. Couvre le ventre, j'ai essayé une taille plus petite cette fois ci et c'est aussi un bon fit pour un ajustement plus serré. Le tissu est assez extensible

    Catherine S.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Great Purchase

    They do what they say they will do!

    Erin R. N.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Super Leakproof No-Show High Rise

    Fits perfectly

    Paula B.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Love them

    Comfortable.

    Reassuring.

    Nicalaine B.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Love these

    Love the fit and coverage

    Mary A. L.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Love my new undies

    Good fit and great for the purpose

    Denise H.
    Verified Buyer