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Ultra Leakproof Zones+® High Rise - Last Call

$23.40 USD

$39.00

40% off

Max absorbency level

Absorbs about 9 super tampons

Invisible under clothes

Extra long liner

Machine washable

Sarah has 38.5” hips, and wearing KNIX M | Warm Sand

Sarah has 38.5” hips, and wearing KNIX M

| Warm Sand
Sarah has 38.5” hips, and wearing KNIX M | Warm Sand

Sarah has 38.5” hips, and wearing KNIX M

Sarah has 38.5” hips, and wearing KNIX M | Warm Sand

Sarah has 38.5” hips, and wearing KNIX M

Clementine has 51” hips, and wearing KNIX XXL  | Warm Sand

Clementine has 51” hips, and wearing KNIX XXL

Clementine has 51” hips, and wearing KNIX XXL  | Warm Sand

Clementine has 51” hips, and wearing KNIX XXL

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

Sarah has 38.5” hips, and wearing KNIX M

Color: Warm Sand

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.

Last Call Return Policy

Sale & Last Call

Our Sale Policy

Here's how returns and exchanges work for sale items.

  • Items discounted up to 30% are eligible for a size exchange or store credit
  • Items discounted above 30% are final sale. No refunds, store credits, or exchanges
  • Not sure where your item lands? Chat with us and we'll check for you

Still have questions? View our full policy here.

Rewards Members Earn 23 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

Product Description

Stay protected with confidence on your heaviest days with the Knix Ultra Leakproof Zones+® High Rise, engineered with an extended internal liner and advanced 360 LeakSeal™ technology to absorb approximately 9 super tampons’ worth of liquid while delivering comfortable, full‑coverage support that sits at the natural waist and stays invisible under clothes. Made from soft, quick‑dry, buttery‑soft fabric, this high‑rise silhouette offers medium hip and bum coverage with a smooth, seamless feel that’s ideal for everyday wear, heavy flow, or light bladder leaks — all machine‑washable and designed for dependable leakproof performance you can trust.

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

Sarah has 38.5” hips, and wearing KNIX M | Warm Sand
| Warm Sand
Sarah has 38.5” hips, and wearing KNIX M | Warm Sand
Sarah has 38.5” hips, and wearing KNIX M | Warm Sand
Clementine has 51” hips, and wearing KNIX XXL  | Warm Sand
Clementine has 51” hips, and wearing KNIX XXL  | Warm Sand
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

  • 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.

Absorbs about 7-9 super tampons worth of liquid.

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 1,099 reviews
Total 5 star reviews: 657 Total 4 star reviews: 147 Total 3 star reviews: 112 Total 2 star reviews: 72 Total 1 star reviews: 111
What our customers are saying
Customers say these leakproof underwear provide excellent protection for periods and incontinence. Many reviews mention the comfort and absorbency, with users appreciating the confidence they provide for heavy days and overnight use. Common feedback includes praise for the soft material and secure fit. However, some find the extended padding up the back bulky or diaper-like. Reviews are mixed on sizing, with several noting inconsistencies or fit issues. While most customers love the protection and plan to purchase more, some prefer lighter options for everyday wear.
76%would recommend this product
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Rating
Ratings
1,099 reviews
  • Rated 3 out of 5 stars
    3 minutes ago
    High hopes but not high enough

    I wish I could adjust the leakproof pad to go more up the front and less completely up the backside. Did not meet the need of this level of protection.

    Caroline R.
    Verified Buyer
    Reviewing
    Ultra Leakproof Zones+® High Rise - Last Call
  • Rated 5 out of 5 stars
    3 hours ago
    First Timer

    Comfy and feeling of security

    Terri B.
    Verified Buyer
    Reviewing
    Ultra Leakproof Zones+® High Rise - Last Call
  • Rated 5 out of 5 stars
    Yesterday
    Underwear

    They are comfortable

    Cathy S.
    Verified Buyer
    Reviewing
    Ultra Leakproof Zones+® High Rise - Last Call
  • Rated 5 out of 5 stars
    4 days ago
    Beautiful product

    Make me feel good!

    Nicole F.
    Verified Buyer
    Reviewing
    Ultra Leakproof Zones+® High Rise - Last Call
  • Rated 5 out of 5 stars
    1 week ago
    5 Stars

    I love the freedom of wearing these but this material is like wearing a heating pad lol

    Rebecca
    Reviewing
    Ultra Leakproof Zones+® High Rise - Last Call
  • Rated 5 out of 5 stars
    1 month ago
    5 Stars

    Love the product. I never tried the product before today. I had a long 12 hour. I stopped at rest areas to be sure I wasnt leaking. My my surprise I wasnt. The undies feel comfortable, it doesnt feel like a dipper. This is the type of innovation women need. I will be ordering more today.

    Lesly
    Reviewing
    Ultra Leakproof Zones+® High Rise - Last Call
  • Rated 1 out of 5 stars
    1 month ago
    What a disappointment!!

    I’ve been using Knix for a couple years and sometimes needed more protection. I’ve also added some unwanted pounds, so I remeasures and ordered these “ultimate” briefs in a larger size. When they arrived I quickly unpacked them and threw them into the washing machine. (I was taught long ago never to wear anything without first laundering it.) I didn’t notice that the design did not provide a thicker absorbent layer (as I had supposed) but a much larger one that reached clear up to the waistband in back! That might be helpful for someone bedridden, but I find it uncomfortable, as well as useless. The leg openings are cut way high (also uncomfortable), and the waistband falls well below my waist. I’d return them if I could, but of course that’s not allowed; nor can I donate them, of course. I might as well flushed my money down rhe drain. Buyer, beware!

    Susan F.
    Verified Buyer
    Reviewing
    Ultra Leakproof Zones+® High Rise - Last Call
  • Rated 5 out of 5 stars
    1 month ago
    Great!

    These are awesome for sleeping in for full leak proof protection!

    Natalie C.
    Verified Buyer
    Reviewing
    Ultra Leakproof Zones+® High Rise - Last Call
  • Rated 5 out of 5 stars
    2 months ago
    5 Stars

    Love love love!!

    Mari
    Reviewing
    Ultra Leakproof Zones+® High Rise - Last Call
  • Rated 5 out of 5 stars
    2 months ago
    5 Stars

    Love love love!!

    Mari
    Reviewing
    Ultra Leakproof Zones+® High Rise - Last Call
  • Rated 5 out of 5 stars
    2 months ago
    5 Stars

    Love love love!!

    Mari
    Reviewing
    Ultra Leakproof Zones+® High Rise - Last Call
  • Rated 5 out of 5 stars
    2 months ago
    5 Stars

    Love love love!!

    Mari
    Reviewing
    Ultra Leakproof Zones+® High Rise - Last Call

Your questions, answered.