Skip to content

Menu

Your Bag

Your cart is empty

But you're full of potential..

Rewards Members Earn 0 Points
New

Ultra Leakproof Zones+® High Rise

$39.00 USD

Checkmark

Max absorbency level

Checkmark

Absorbs about 9 super tampons

Checkmark

Invisible under clothes

Checkmark

Extra long liner

Checkmark

Machine washable

Leslie has 49” hips, wearing KNIX XXL  | Black

Leslie has 49” hips, wearing KNIX XXL

| Black
Leslie has 49” hips, wearing KNIX XXL  | Black

Leslie has 49” hips, wearing KNIX XXL

Leslie has 49” hips, wearing KNIX XXL  | Black

Leslie has 49” hips, wearing KNIX XXL

Elyse is wearing KNIX L  | Black

Elyse is wearing KNIX L

Elyse is wearing KNIX L  | Black

Elyse is wearing KNIX L

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

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

Designed with extra long protective coverage in the front & back

Washes just like regular underwear | General

Washes just like regular underwear

Leslie has 49” hips, wearing KNIX XXL

Color: Black

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.

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 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

Comfort-First Fit

High-rise silhouette sits at your natural waist and offers medium coverage for the bum, combining comfort with a flattering fit.

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

Leslie has 49” hips, wearing KNIX XXL  | Black
| Black
Leslie has 49” hips, wearing KNIX XXL  | Black
Leslie has 49” hips, wearing KNIX XXL  | Black
Elyse is wearing KNIX L  | Black
Elyse is wearing KNIX L  | Black
Made with soft, stretchy fabric that’s quick dry for your comfort | General
Designed with extra long protective coverage in the front & back | 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
    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
  • light period days
  • sweat
  • 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 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
  • extra heavy period days
  • overnight protection
  • light bladder leaks
  • 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.

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.

4.1
Rated 4.1 out of 5 stars
Based on 1,074 reviews
Total 5 star reviews: 640 Total 4 star reviews: 147 Total 3 star reviews: 110 Total 2 star reviews: 70 Total 1 star reviews: 107
76%would recommend this product
1,074 reviews
  • Rated 5 out of 5 stars
    2 days ago
    Best investment ever!!!

    I originally purchased the three pair of underwear on Amazon and fell in love so I went and bought three more from the Knix website because I really wanted to invest in good period underwear. These are a dream! I don’t have to worry about any leaks or smells or uncomfortableness when wearing these. Super absorbent especially for being so thin! I recommend these !

    Alyson H.
    Verified Buyer
  • Rated 5 out of 5 stars
    5 days ago
    Works great! Very satisfied.

    My daughter loves these panties. Very adsorbent and comfortable. Good for all day or overnight use.

    Stacie N.
    Verified Buyer
  • Rated 5 out of 5 stars
    5 days ago
    Leak proof underwear

    Perfect for the heavy days ! Never had to worry wearing these ! And super comfy !

    Kyla D.
    Verified Buyer
  • Rated 5 out of 5 stars
    6 days ago
    Great product

    Provides the protection I need .

    Dianne B.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    super

    tres confortable, bonne protection contre les fuites urinaires

    muguette g.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    5 Stars

    Love Love these underwear!! I feel normal again! No more pads or plastic!!!

    Jackie
  • Rated 5 out of 5 stars
    1 week ago
    Knix Ultra Leakproof ROCK!!

    Since receiving my Knix panties I haven't had any leakages on my outer clothing. I'm so happy I ordered from Knix since I had been using Everdries which caused me to leak on my clothes and yes, even on my car seat! NOT A HAPPY CAMPER!! So I googled what are the best 5 incontinence underwear and AI listed Knix as one. I did some research on Knix and placed my order. So glad I did!!

    Sandra T.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Heavy duty protection

    So comfortable while also being super protective. It's nice to not feel like you're wearing a diaper while pretty much getting the effectiveness of one

    Courtney P.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Would buy again for sure

    I am very impressed with my purchase. Very soft and the fit is great. 10 out of 10

    Angela J.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Ultra leakproof

    Excellent protection and confortable.

    Elaine M.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Perfect product

    You have to buy this cover 100% and the night so soft and perfect

    Olga V.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Good absorbant product

    Good made underwear

    Pamela B.
    Verified Buyer