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Last Call

Leakproof Logo Modal Rib Boxer Brief - Last Call

$15.00 USD

$35.00

57% off

Absorbs about 1 regular tampon

Ultra-soft ribbed modal

Perfect for daily wear

Machine washable

Esther has 38

Esther has 38" hips and wears KNIX M

Esther has 38

Esther has 38" hips and wears KNIX M

Esther has 38

Esther has 38" hips and wears KNIX M

Esther has 38" hips and wears KNIX M

Color: White

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 30% or less 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 15 Points

Product Description

Easy-to-wear underwear meets a new, must-have look. Soft modal spandex in a boxer-style silhouette with signature Knix logo waistband—in other words— these are your next favorite pair. Featuring our built-in leakproof technology so that you can use them as backup period protection or on their own on lighter days.

Comfort-First Fit

This boxer style sits at the natural waistline with full bum coverage.

Worry-Free Protection

Our original leakproof technology offers a barely there feel while patented bonded edges help prevent side leaks.

Light Absorbency

Absorbs 1 regular tampon worth of liquid—perfect for light flow days, sweat and discharge, and backup protection for heavy flow days.

Easy to Wash

Machine washable, just like your regular underwear.

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Esther has 38
Esther has 38
Esther has 38

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
4.1
Rated 4.1 out of 5 stars
Based on 167 reviews
Total 5 star reviews: 106
Total 4 star reviews: 21
Total 3 star reviews: 15
Total 2 star reviews: 6
Total 1 star reviews: 19
75%would recommend these products
FitRated 0.1 on a scale of minus 2 to 2
ComfortRated 4.1 on a scale of 1 to 5
EffectivenessRated 4.2 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
167 reviews
  • Rated 5 out of 5 stars
    3 minutes ago
    Boxers

    Love the feel and fit

    BD
    Bonita D.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 1 out of 5 stars
    4 days ago
    Too itchy

    The fit is nice the the guesser is too big and it's very itchy.It goes up all the way in the back which is not good for me

    DH
    Dara H.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    4 days ago
    review

    Good fit and good value

    MH
    Myra H.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    6 days ago
    Comfortable

    I like it!

    TS
    Tola S. D. M. S.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 3 out of 5 stars
    6 days ago
    Just ok

    Stretches too much

    SR
    Shirley R.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    1 week ago
    So soft!

    I bought these to wear in summer under dresses and skirts. The modal material has been my go-to for warm weather bras (and for the heat of peri-menopause). These are way softer than the modal bras or tanks.. I was very pleasantly surprised! I normally wear a small in knix underwear, but find a small fits better in these.

    K Profile picture for Knix
    Knix
    1 week ago

    Hey Keri!

    So happy to hear you're loving the softness! Thanks for the helpful sizing tip - that's super useful for other customers. Perfect for summer comfort!

    Team Knix

    KM
    Keri M.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    2 weeks ago
    SO COMFY

    This is the most comfortable underwear I have EVER worn. I’m obsessed with the modal rib fabric, to the point where I wear this all the time, not just on my period! Obviously should only be worn with a baggier pant, but that’s most of my wardrobe anyway lol

    K Profile picture for Knix
    Knix
    2 weeks ago

    Hey Madeline!

    We're so thrilled you're obsessed with the modal rib fabric! There's nothing better than hearing our customers feel amazing in their Knix every day!

    Team Knix

    MA
    Madeline A. S.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    2 weeks ago
    These are my favorites!

    I ordered three different styles to see which I liked the best. This style is my favorite. I’m sad that I only got to order one pair and they’re being phased out. The fit is perfect for me and I love the fabric.

    K Profile picture for Knix
    Knix
    2 weeks ago

    Hey Annie!

    This makes us so happy! We're thrilled this became your favorite style. Thanks for giving us a chance to find your perfect fit!

    Team Knix

    AS
    Annie S.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    1 month ago
    soooo comfy

    love wearing these. i would buy 10 more. material is so soft.

    K Profile picture for Knix
    Knix
    1 month ago

    Hey Brianna!

    This is amazing! We're so happy to hear you're loving the softness and comfort of our Logo Modal Rib Boxers. There's nothing better than hearing our customers feel amazing in their Knix!

    Team Knix

    BW
    Brianna W.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    1 month ago
    5 Stars

    I really like these, I'm hoping to be able to get a couple of more, they are comfortable, but maybe I'll try large next time they may be a itsy bitsy too big a little too roomy so if I purchase another pair I'll purchase that pair in large, other than that I really like them.

    C
    Cecelia
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    1 month ago
    5 Stars

    My absolute go-to on a crampy night

    C
    Chandler
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 4 out of 5 stars
    2 months ago
    Good fit

    Would love to reorder, but I don't see it on your website. They fit comfortably, but need for a heavier leak. Still they are a great choice!

    AS
    Agnes S.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call

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