Skip to content

Your Bag

Your cart is empty

But you're full of potential..

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.

First Pair Risk Free for 30 Days

Leakproof Underwear, Risk Free

Returns & Exchanges

Leakproof Underwear, Risk Free
Trying leakproof underwear for the first time? Your first pair is completely risk free for 30 days. Wear them, wash them, and see how they work for your body. If they’re not right for you, we’ll refund your first pair. Prefer a different size or style? We also offer free exchanges.

How it works:

  • Risk free applies to leakproof underwear on your first order
  • Refund covers the item price (original shipping excluded)
  • Just email info@knix.com and we’ll take care of you

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

  • 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
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 6,233 reviews
Total 5 star reviews: 5k Total 4 star reviews: 676 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
6,233 reviews
  • Rated 5 out of 5 stars
    3 minutes ago
    I love knix

    I have ordered several pairs of Knix leakproof underwear and will continue to purchase. Love the silky soft material and the leakproof benefit is exceptional

    Janis A.
    Verified Buyer
  • Rated 5 out of 5 stars
    4 days ago
    High Rise

    I found the seam a little rough the first time I wore a pair but fine now after wshing

    Helen B.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Worth it

    Very comfortable and provides all the protection during heavy days.

    Czarina F.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Wearability

    I just know this! Knix has saved me & any thoughts about costs.. just that a Thought.. I’ve had my 3 pair for 6 years.. they’ve Never worn out & just as comfortable as ever… NOW I need to get rid of the cheapies & get More! Don’t hesitate just get these!

    Susie C.
  • Rated 5 out of 5 stars
    1 week ago
    Consistently good

    Always fit well, are comfortable, provide confidence and I like the new pattern.

    Mona B.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Travel undies

    So far these undies feel comfortable and I’m looking forward to feeling confident when I’m travelling and touring.

    Tammy H.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 weeks ago
    5 Stars

    Love the no lines!

    Doris
  • Rated 5 out of 5 stars
    2 weeks ago
    Love my knix

    Love all the Knix products but these might be my favorite

    Janis A.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 weeks ago
    Good to have

    These underpants give great protection

    Ann D.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 weeks ago
    High rise

    love them

    June T.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 weeks ago
    Comfy.

    For a super leakproof panty these are really comfortable under pants and leggings.

    Linda D.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Super leakproof No-show High Rise

    Very comfortable

    Cheryl G.
    Verified Buyer