Skip to content Accessibility Statement

Your Bag

Your cart is empty

But you're full of potential..

Create an account to join Club Knix and earn points on this order
Bundle Deal

Super Leakproof® No-Show High Rise 3-Pack

$75.00 USD

$108.00

Save $33

Now absorbs about 6 super tampons

2" added to gusset for extra protection

Invisible under clothes

Machine washable

Color: Berry/Violet/Lavender Limited Edition

Size:

True to Size

Size:

Size and Fit Guide

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 75 Points

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

- Business Insider

Comfort-First Fit

The high-rise fit sits at the natural waistline and offers medium bum coverage.

Worry-Free Protection

Patented leakproof technology delivers a barely-there feel, while bonded edges 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 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
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

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

4.6
Rated 4.6 out of 5 stars
Based on 6,326 reviews
Total 5 star reviews: 5k Total 4 star reviews: 681 Total 3 star reviews: 253 Total 2 star reviews: 144 Total 1 star reviews: 204
What our customers are saying
Customers say these underwear are exceptionally comfortable, soft, and feel like regular underwear without bulk. They appreciate the smooth, silky material that doesn't show lines under clothing and provides excellent absorption for bladder leaks and periods. Many note the high-rise style offers good coverage and stays in place throughout the day. Users find them durable, maintaining quality after multiple washes over years. Common praise includes the confidence and peace of mind they provide for travel and daily activities. Some mention sizing runs small and recommend going up a size. A few note concerns about recent design changes making them bulkier, and some find insufficient elastic around leg openings. Reviews consistently highlight their effectiveness for various needs from light leaks to heavy flow days.
92%would recommend these products
Keywords
Keywords
Rating
Ratings
6,326 reviews
  • Rated 5 out of 5 stars
    35 minutes ago
    Love my Knix

    Never thought I'd love a pair of underwear that I can feel confident in!

    K Profile picture for Knix
    Knix
    4 minutes ago

    Hey Samantha!

    This makes us so happy! We're thrilled to hear our Super Leakproof No-Show High Rise has you feeling confident and comfortable. There's nothing better than loving your Knix!

    Team Knix

    Samantha K.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show High Rise
  • Rated 5 out of 5 stars
    3 days ago
    No show high rise

    I ordered these for my daughter. She was blown away by how well they worked. Her first response was can we order more! Where were these when I was in high school?!! Thank you for making such a great product!

    K Profile picture for Knix
    Knix
    3 days ago

    Hey Paula!

    This absolutely made our day! We're so thrilled your daughter loves them and that they're working so well for her. Thanks for sharing the Knix love!

    Team Knix

    Paula D.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show High Rise
  • Rated 5 out of 5 stars
    5 days ago
    Would buy again.

    True to size Very comfortable and protection worked well.

    K Profile picture for Knix
    Knix
    4 days ago

    Hey Jennifer!

    Thanks so much for taking the time to review our Super Leakproof No-Show High Rise! We're thrilled to hear you're loving the fit and protection!

    Team Knix

    Jennifer M.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show High Rise - Original - Last Call
  • Rated 5 out of 5 stars
    5 days ago
    5 Stars

    Comfortable fit

    Joann
    Reviewing
    Super Leakproof® No-Show High Rise 3-Pack
  • Rated 2 out of 5 stars
    5 days ago
    Not as leak proof as indicated

    The absorbency for bladder leaks does not match the 4 light pads as described. Will not be using these.

    Ellen R.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show High Rise 3-Pack
  • Rated 5 out of 5 stars
    1 week ago
    So comfy

    Highly recommend

    K Profile picture for Knix
    Knix
    1 week ago

    Hey Korin!

    Thanks so much for taking the time to review our Super Leakproof No-Show High Rise 3-Pack! We're so happy to hear you're loving the comfort!

    Team Knix

    Korin K.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show High Rise 3-Pack
  • Rated 5 out of 5 stars
    1 week ago
    Love these

    I’ve never found more comfortable period underwear—especially for plus size.

    K Profile picture for Knix
    Knix
    1 week ago

    Hey Miranda!

    This makes us so happy! We're thrilled you found your perfect match in comfort and fit. There's nothing better than hearing our customers feel amazing in their Knix!

    Team Knix

    Miranda O.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show High Rise
  • Rated 5 out of 5 stars
    1 week ago
    Comfortable

    Every pair I have purchased has been very comfortable. They are very durable

    K Profile picture for Knix
    Knix
    1 week ago

    Hey Sandra!

    Thanks so much for the amazing review! We're thrilled to hear you're loving the comfort and durability of your Super Leakproof No-Show High Rise!

    Team Knix

    Sandra K.
    Verified Buyer
    Reviewing
    POS - Super Leakproof® No-Show High Rise - Last Call
  • Rated 1 out of 5 stars
    1 week ago
    Back to the drawing board!

    I had high hopes (probably my own fault) for these underwear. I've been trying to find a replacement for my 3 year old Anti by Proof underwear. Seems they are no longer in business. I've been struggling with urine leaks for a few years now, and my Anti underwear contained it all without any noticeable odor. These do not. I decided to try going without a pad to see if I could wear them on their own. No leak through, but OH BOY did they SMELL! Can't do these. There is ZERO odor protection. I don't expect there to be NO odor, but this didn't even try. Guess I bought the wrong product. These are DEFINITELY FOR PERIODS ONLY! But, back when I was still having periods, there WAS a smell. I wouldn't recommend these to ANYONE unless they were wearing and changing frequently a super tampon. And ONLY as an emergency back up. You know, for a special event where you cannot afford to have an accident. But for ladies who want to be confident if they leak a little when they sneeze or cough, keep looking. The fit was good, that's why I gave them one star.

    K Profile picture for Knix
    Knix
    1 week ago

    Hey Diane!

    Thanks for your honest feedback. We're sorry these didn't meet your expectations for odor control. Your experience helps us improve our products!

    Team Knix

    Diane N.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show High Rise
  • Rated 5 out of 5 stars
    1 week ago
    Smooth Feel, Good Production

    I love these briefs. This is the 4 drop version. Smooth, not bulky but offers great protection from leaks.

    K Profile picture for Knix
    Knix
    1 week ago

    Hey Patricia!

    Thanks so much for the amazing review! We're thrilled you're loving the smooth feel and leak protection. It's exactly what we were going for!

    Team Knix

    Patricia S.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show High Rise 3-Pack
  • Rated 5 out of 5 stars
    1 week ago
    Winner

    Fit just right.

    K Profile picture for Knix
    Knix
    1 week ago

    Hey Elizabeth!

    That's what we love to hear! We're so happy our Super Leakproof No-Show High Rise fits you perfectly. Thanks for the awesome review!

    Team Knix

    Elizabeth F.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show High Rise
  • Rated 2 out of 5 stars
    1 week ago
    Elastic is not good

    I have bought these many times and this lot has different elastic. That does not stay up! Ugh!

    The original maker had a perfect product. Ever since then, they have really lost quality,primarily in the elastic choices. I do not know how many different ones they've tried, but they need to go back to the original elastic!!!

    Suzanne G.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show High Rise