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Light Leakproof No-Show Boyshort

$25.00 USD

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

Absorbs about 1 regular tampon

Invisible under clothes

Perfect for daily wear

Machine washable

Sarah has 38.5” hips, and wearing KNIX M | Black

Sarah has 38.5” hips, and wearing KNIX M

| Black
Sarah has 38.5” hips, and wearing KNIX M | Black

Sarah has 38.5” hips, and wearing KNIX M

Sarah has 38.5” hips, and wearing KNIX M | Black

Sarah has 38.5” hips, and wearing KNIX M

| General
| General

Sarah has 38.5” hips, and wearing KNIX M

Color: Black

Size:

True to Size

Size:

Size and Fit Guide

Build Your 3-Pack

Light Leakproof No-Show Boyshort

Color: Black

Size:

Size:

Light Leakproof No-Show Boyshort

Color: Black

Size:

Size:

Light Leakproof No-Show Boyshort

Color: Black

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 25 Points

Product Description

So thin, you’ll forget you’re wearing anything. This style has full bum and hip coverage. Our original leakproof technology offers a barely-there feel while absorbing about 1 regular tampon or pantyliner worth of liquid. Patented bonded edges help prevent against side leaks. These underwear feature our signature buttery soft fabric. No show construction is designed to be invisible under clothes, including workout leggings.

Comfort-First Fit

Boyshort silhouette with a mid-rise fit and extra hip and bum coverage.

Worry-Free Protection

Our original leakproof technology provides a barely noticeable feel. 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.

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 regular underwear.

Zoom

Sarah has 38.5” hips, and wearing KNIX M | Black
| Black
Sarah has 38.5” hips, and wearing KNIX M | Black
Sarah has 38.5” hips, and wearing KNIX M | Black
| General
| 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
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 1 regular tampon 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 7,245 reviews
Total 5 star reviews: 5.6k Total 4 star reviews: 934 Total 3 star reviews: 334 Total 2 star reviews: 170 Total 1 star reviews: 165
What our customers are saying
Customers say these boyshorts are extremely comfortable and feel like wearing nothing. Many appreciate the smooth fit, soft fabric, and good coverage. Users find them effective for light bladder leaks and as period backup. The no-show design works well under clothing without visible lines. Common feedback includes praise for the silky material and secure fit that doesn't ride up. Several mention sizing considerations, with some recommending going up one size. A few note concerns about leg hole stretching after wear and the gusset being narrower than expected. Most customers become repeat buyers and prefer these over traditional liners.
93%would recommend this product
FitRated 0.0 on a scale of minus 2 to 2
ComfortRated 4.7 on a scale of 1 to 5
EffectivenessRated 4.6 on a scale of 1 to 5
Keywords
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Rating
Ratings
Height
Height
Pant Size
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Pant Size Purchased
Pant Size Purchased
7,245 reviews
  • Rated 5 out of 5 stars
    Yesterday
    Boyshort

    I’ve been buying knix underwear for years! I love them because they fit right, you know what your getting every time and I struggle with IBS and they are helpful with uncontrollable accidents!

    Laura B.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Boyshort
  • Rated 5 out of 5 stars
    Yesterday
    Boyshort Panty

    Supersoft panty that doesn't ride. Love the fit.

    Wanda-Lee T.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Boyshort
  • Rated 5 out of 5 stars
    2 days ago
    Comfy

    Nice support, fit and comfy

    Cyndi P.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Boyshort
  • Rated 4 out of 5 stars
    2 days ago
    Good but not “no-show”

    I like these a lot and they absorb small bladder leaks well. However, they are not “no-show “ under my pants or leggings. You can still see the lines. I adapted them a little so that I could wear them.

    Lauren L. S. L.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Boyshort
  • Rated 5 out of 5 stars
    1 week ago
    So comfy

    Comfortable.

    patricia a. t.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Boyshort
  • Rated 3 out of 5 stars
    1 week ago
    Up one size!

    They are very good quality, however, I chose (or was suggested) to get Sz Lg. Needed one size bigger.

    Marie L.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Boyshort
  • Rated 5 out of 5 stars
    1 week ago
    Excellent fit!

    I love the smooth fit and the assurance to catch accidental leaks!

    Angela P.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Boyshort
  • Rated 5 out of 5 stars
    4 weeks ago
    Super comfy

    Love these - they’re so comfortable!

    Katy S.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Boyshort
  • Rated 5 out of 5 stars
    1 month ago
    Love these! ❤️

    Feels like nothing on. 👍

    Marie B.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Boyshort
  • Rated 5 out of 5 stars
    1 month ago
    Best ever

    I’ll never wear any other kind

    Deborah W.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Boyshort
  • Rated 5 out of 5 stars
    1 month ago
    Coupe parfaite !!

    .

    Audrey-Anne J.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Boyshort
  • Rated 5 out of 5 stars
    1 month ago
    love them!!

    Exactly what I needed.

    I'm a total Knix user!!

    Anne F.
    Verified Buyer
    Reviewing
    Light Leakproof No-Show Boyshort

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