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Leakproof UltraThin No-Show High Rise

$32.00 USD

Buy 3+ Save 15%, Buy 5+ Save 20%

Absorbs about 2.5 super tampons

Invisible under clothes

Moderate protection without the bulk

Machine washable

Text on Image: Absorbs about 2.5 super tampons' worth
Text on Image: 360LeakSeal™ patented technology designed to deal in leaks from every angle
Text on Image: Made with soft, stretchy fabric for all day comfort

Color: Mulberry Limited Edition

Size:

True to Size

Size:

Size and Fit Guide

Build Your 3-Pack

Leakproof UltraThin No-Show High Rise

Color: Mulberry Limited Edition

Size:

Size:

Leakproof UltraThin No-Show High Rise

Color: Mulberry Limited Edition

Size:

Size:

Leakproof UltraThin No-Show High Rise

Color: Mulberry Limited Edition

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

New to leakproof? Your first pair is risk free for 30 days. Wear them, wash them, and see how they work for your body. Not right for you? We'll refund the item price (original shipping excluded). Prefer a different size or style? We also offer free exchanges. Just email info@knix.com and we'll take care of you.

Purchased leakproof before? Within 30 days of delivery you can exchange for another size, style, or store credit. We're unable to provide refunds on underwear. If you ordered multiple pairs, please open, wash, and wear one pair only before initiating an exchange.

Still have questions? View our full policy here.

Rewards Members Earn 32 Points

“Best seamless absorbent underwear"

- Women's Health

Product Description

These underwear feature our buttery soft fabric and offer a full bum and hip coverage, sitting near your belly button. Great for leak protection, the ultra-thin liner absorbs about the same as 2.5 super tampons or 1 regular pad’s worth. Get the protection you want from periods and light bladder leaks while feeling comfortable and worry-free.

High Rise Silhouette

Sits just above the natural waist. Full coverage through the stomach, hip, and bum.

Moderate Absorbency

Absorbs 2.5 super tampons worth of liquid—perfect for moderate flow days, light bladder leaks, and sweat. The carbon cotton gusset top layer keeps you dry.

Worry-Free Protection

Perfect for moderate period days, light bladder leaks, and sweat. Moisture-wicking liner keeps you dry and comfortable.

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 your regular underwear.

Zoom

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
FRESH FIX TECHNOLOGY®

Built-in protection that feels like nothing at all.

Our patented 360 LeakSeal™ technology locks in leaks at every edge. The ultra-thin liner absorbs about 2.5 super tampons worth of liquid.

Soft Top Layer

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

4.5
Rated 4.5 out of 5 stars
Based on 1,481 reviews
What our customers are saying
Customers say these high-rise underwear are extremely comfortable and feel like wearing nothing at all. Many appreciate the smooth, silky fabric that provides confidence for light bladder leaks without the bulk of traditional liners. Users find them breathable, lightweight, and effective at staying in place without rolling down. The high waistband offers tummy support and works well under fitted clothing. However, sizing appears inconsistent, with many noting they run small and recommending ordering a size up. Some mention the waistband sits very high, which isn't preferred by all users. A few report issues with the absorbent area placement or coverage. Overall, customers praise their comfort and effectiveness for everyday wear.
86%would recommend these products
FitRated -0.0 on a scale of minus 2 to 2
ComfortRated 4.5 on a scale of 1 to 5
EffectivenessRated 4.5 on a scale of 1 to 5
Keywords
Keywords
Rating
Ratings
Height
Height
How do you use your Leakproof?
How do you use your Leakproof?
Usual Pant Size
Usual Pant Size
1,481 reviews
  • Rated 2 out of 5 stars
    5 minutes ago
    WAY too high!

    I love the thin, silky feel of these underwear, I like them for back-up protection. However, as a 5'4", curvy woman, these are WAY to high rise - they sit above my pants and just roll or fold over all day long making them insanely uncomfortable and create a bulge that is totally counterproductive when wearing underwear that are meant not to be seen. Maybe if I had a different body size or proportions they would work, but for my body they are a definite no-go.

    AC
    Amanda C.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show High Rise Kit*
  • Rated 5 out of 5 stars
    5 hours ago
    Undies

    Fabulous undies! Fit great and oh so silky! Fantastic quality! A+++++(

    SM
    Sherry M.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show High Rise
  • Rated 2 out of 5 stars
    14 hours ago
    Too tight for XL

    I tried on my OTHER XL panties that are XL,, and these are comfortable. These new ones feel like they are size L. Donna Giroux

    DG
    donna g. c. P. H.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show High Rise
  • Rated 1 out of 5 stars
    17 hours ago
    XXL - is too small for a 2X gal

    I got the panties and washed them as suggested - but cannot get them on.... $41 for a pair of panties I cannot wear.... I really wanted to like them

    DS
    Dinah S.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show High Rise
  • Rated 5 out of 5 stars
    18 hours ago
    My favourite underwear

    They give me confidence.

    JC
    Joanne C.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show High Rise
  • Rated 5 out of 5 stars
    20 hours ago
    Very comfortable

    Very comfortable and they actually do handle little bladder leaks

    DO
    Deborah O.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show High Rise
  • Rated 5 out of 5 stars
    Yesterday
    Absolutely love these!

    i love using these for bed time because i no longer have to worry about bleeding through, it's completely mess free and extremely comfortable!

    E
    Elizabeth
    Verified Reviewer
    Reviewing
    Leakproof UltraThin No-Show High Rise
  • Rated 5 out of 5 stars
    4 days ago
    Ultra thins

    Love them!!!!!!

    SK
    Sharon K.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show High Rise
  • Rated 5 out of 5 stars
    4 days ago
    5 Stars

    They do what they claim to do and well! Super comfortable!! Highly recommend!

    C
    Caressa
    Reviewing
    Leakproof UltraThin No-Show High Rise
  • Rated 5 out of 5 stars
    4 days ago
    Love these!

    While I don't have periods anymore, these are great for occasional boughts of incontinence, especially sneezing! If you know, you know. 😂 They're super comfortable & no show under my leggings.

    AT
    Angie T.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show High Rise 3-Pack - Last Call
  • Rated 5 out of 5 stars
    6 days ago
    Leakproof underwear

    Very nice underwear. Thanks for making them.

    LF
    Lois F.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show High Rise
  • Rated 5 out of 5 stars
    1 week ago
    Comfortable and meets the need perfectly!

    comfortable and meets the need. Gives peace of mind!

    SB
    susan b.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show High Rise

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