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Home / Boyshort Underwear / Super Leakproof® No-Show Boyshort

Super Leakproof® No-Show Boyshort

$29.00 USD

Mix & Match: 3+ for $25 each
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Absorbs about 6 super tampons

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Invisible under clothes

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Extended gusset for extra protection

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Machine washable

Megan has 36.5” hips and wears KNIX S | Black

Megan has 36.5” hips and wears KNIX S

| Black
Megan has 36.5” hips and wears KNIX S | Black

Megan has 36.5” hips and wears KNIX S

Megan has 36.5” hips and wears KNIX S | Black

Megan has 36.5” hips and wears KNIX S

| General

Megan has 36.5” hips and wears KNIX S

Absorbency: Heavy

Heavy
Drop
Drop
Drop
Drop
Drop
about 4-7 super tampons
Essential
Drop
Drop
Drop
Drop
Drop
No Absorbency
Light
Drop
Drop
Drop
Drop
Drop
about 1-3 regular tampons

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.
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Comfort-First Fit

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

Worry-Free Protection

Patented bonded edges help 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 regular underwear.

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Megan has 36.5” hips and wears KNIX S | Black
| Black
Megan has 36.5” hips and wears KNIX S | Black
Megan has 36.5” hips and wears KNIX S | Black
| 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
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

Soft Top Layer

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

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4.6
Rated 4.6 out of 5 stars
Based on 3,992 reviews
Total 5 star reviews: 3.1k Total 4 star reviews: 492 Total 3 star reviews: 149 Total 2 star reviews: 104 Total 1 star reviews: 110
93%would recommend these products
ComfortRated 4.7 on a scale of 1 to 5
EffectivenessRated 4.6 on a scale of 1 to 5
FitRated 0.0 on a scale of minus 2 to 2
Ease of UseRated 4.6 on a scale of 1 to 5
Write a Review (Opens in a new window)
3,992 reviews
  • Rated 5 out of 5 stars
    3 minutes ago
    Confortable, discreet and very reliable

    Fits well under clothes and provides great protection without feeling bulky.

    Raluca K.
    Verified Buyer
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  • Rated 5 out of 5 stars
    21 hours ago
    5 Stars

    I love it!!! Hoping for medium leak coversge though

    DEBORAH
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Boyshorts

    Comfortable and easy to wear with any outfit.

    Colleen M.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    2 weeks ago
    Uncomfortable

    I was surprised to find the seams were thick and quite snug. Will have to exchange for an XXL size though I fit an XL in all the other styles.

    Patricia J.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    Love them

    Feel comfortable and protected for night wear

    Robin H.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    5 Stars

    Great fit and they are confortable.

    Sandra
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    5 Stars

    Great fit and they are confortable.

    Sandra
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    5 Stars

    So cute and fit well. Very comfortable.

    Sandra
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Very happy

    I love these. I feel more secure when wearing them. I just don’t worry about being out anymore.

    Charlene M.
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    2 months ago
    4 Stars

    More comfortable and does not ride up like other newer cuts, but still not as comfortable as original versions.

    Lorin
    Was this helpful?
  • Rated 5 out of 5 stars
    2 months ago
    Leakproof for life!

    I've been using Knix leakproof underwear for about 5 years now. After trying a couple other brands, I found Knix and haven't looked back. They are smooth and invisible under clothing, so comfortable, and even the fabric in the gusset is soft and doesn't chafe (unlike another brand I won't name). I just love these and have gotten my sister's and nieces hooked on them as well.

    Leslie C.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 months ago
    Great underwear

    Great for my heavy days. The underwear is so comfortable. I used to have to double up on tampons and wear a pad to not bleed though! Now I’m down to just a single tampon and knix underwear! (Hoping to get rid of the tampon completely!)

    Meagan G.
    Verified Buyer
    Was this helpful?