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Home / The Last of It Sale - Leakproof Underwear / Super Leakproof® No-Show Boyshort - Original - Sale
Flash Sale ⚡️

Super Leakproof® No-Show Boyshort - Original - Sale

$22.40 CAD

$32.00

30% off

Absorbs about 4 super tampons

Invisible under clothes

Extended gusset for extra protection

Machine washable

Absorbency: Heavy

Color: Black

Size:

True to Size

•

Size:

Size and Fit Guide

Free Shipping on orders $100+

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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.

Delivery Time

For the most up-to-date delivery time estimates, please refer to the shipping timeline at checkout. Delivery timelines vary depending on location and do not include processing times.

Shipping Charges

Orders over $100* CAD = Free Shipping (2-6 business days)

Orders under $100* CAD = $12 CAD Shipping (1-3 business days)

Orders delivering to NWT, Nunavut and Yukon are subject to $20 delivery fee.

*After discounts, before shipping and taxes.
Return Policy: Final Sale

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 22 Points

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 4 tampons worth of liquid—perfect for heavy flow days, overnight protection, and light bladder leaks.

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

| Black
| Black
| Black
| 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

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4.6
Rated 4.6 out of 5 stars
Based on 4,410 reviews
Total 5 star reviews: 3.5k Total 4 star reviews: 527 Total 3 star reviews: 161 Total 2 star reviews: 112 Total 1 star reviews: 121
Reviews Summary
Customers say these boyshorts are comfortable and provide excellent protection against leaks. Many appreciate the soft, stretchy fabric and secure fit that stays in place without rolling or bunching. Users frequently mention feeling confident wearing them for overnight protection and heavy flow days. Several note the underwear is invisible under clothing and doesn't feel bulky. Common praise includes the smooth material and good coverage. However, some customers report concerns about recent style changes, with the waistband now sitting lower and causing rolling issues. A few mention the gusset could be longer for better coverage, and some find the seams uncomfortable or thick. Despite mixed feedback on sizing and fit preferences, most reviewers express satisfaction with the leak protection and comfort.
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
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4,410 reviews
  • Rated 5 out of 5 stars
    1 week ago
    Boyshorts

    True to size. Fits nicely, comfortable and all day protection

    Randi H.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show Boyshort
    Was this helpful?
  • Rated 5 out of 5 stars
    2 weeks ago
    Boyshirtd

    Very pretty. Fits perfectly. Love to have more colo varieties.

    Bonita D.
    Verified Buyer
    Reviewing
    POS - OLD Super Leakproof® No-Show Boyshort
    Was this helpful?
  • Rated 5 out of 5 stars
    2 weeks ago
    The go-to OG

    I love my Knix. Even after I had my daughter and started worrying about bladder leaks, these have been my go to. They fit perfectly, they’re comfortable, and they’re just like regular underwear. I can wash them like normal, and they dry pretty quickly when I lay them flat. I’ve tried the other cuts like hi-rise or bikini, and nothing really compares to the boyshort in comfort and coverage. I’ll never have to worry when I wear my Knix.

    Katina P.
    Verified Buyer
    Reviewing
    POS - OLD Super Leakproof® No-Show Boyshort
    Was this helpful?
  • Rated 5 out of 5 stars
    2 weeks ago
    Comfy

    These are very comfortable, don't wedge, and are perfect for not sure if you are starting or are done days.

    Lindsay R.
    Verified Buyer
    Reviewing
    POS - OLD Super Leakproof® No-Show Boyshort
    Was this helpful?
  • Rated 5 out of 5 stars
    2 weeks ago
    My daughter loves it.

    No leak ,fits perfectly, she love everything about it. Will be buying a few more for her

    Rebbie C.
    Verified Buyer
    Reviewing
    Teen Super Leakproof® No-Show Boyshort 3-Pack
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    Love

    Restocking some old ones bought a few years ago. Always a reliable and comfortable staple.

    Christine P.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show Boyshort
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    These are great

    This is my go to style from Knix and what I always buy. I usually buy light leakproof but these I have purchased a few times and I like them too.

    Hope K.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show Boyshort - Original - Last Call
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    Leakproof underwear

    Works great for my needs. A little wider gusset would be appreciated to cover all the lady bits.

    Terry G.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show Boyshort
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  • Rated 5 out of 5 stars
    1 month ago
    5 Stars

    J'ai acheté une paire en magasin et j'ai tellement aimé le confort que j'ai acheter un bundle pack.. je les adores!

    Anick
    Reviewing
    Super Leakproof® No-Show Boyshort
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Excellent product

    I like the fit, the feel of material. Excellent.

    Catherine A. M.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show Boyshort
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  • Rated 5 out of 5 stars
    1 month ago
    A boyshort panty I needed

    I tried it on & it is comfortable. I believe that this underwear will help me out. Thank you Knix & I appreciate you for sending me this underwear.

    Rainet L.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show Boyshort
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  • Rated 5 out of 5 stars
    1 month ago
    Love

    I love these super Leakproof No-Show Boyshort underwear. They are great.

    Heather A. H.
    Verified Buyer
    Reviewing
    Super Leakproof® No-Show Boyshort
    Was this helpful?