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ACOTAR™ x Knix

Light Leakproof UltraThin™ No-Show Thong 3-Pack

$68.00 USD

$81.00

Save $13

Limited-edition ACOTAR™ x Knix collection

Absorbs about 2 regular tampons

Invisible under clothes

More absorbency without bulk

Machine washable

Orlane has 40” hips wearing KNIX M | | Spring Court Bloom/Pink/Thorns and All

Orlane has 40” hips wearing KNIX M

Orlane has 40” hips wearing KNIX M | | Spring Court Bloom/Pink/Thorns and All

Orlane has 40” hips wearing KNIX M

Orlane has 40” hips wearing KNIX M | | Spring Court Bloom/Pink/Thorns and All

Orlane has 40” hips wearing KNIX M

Orlane has 40” hips wearing KNIX M | | Spring Court Bloom/Pink/Thorns and All

Orlane has 40” hips wearing KNIX M

Color: Spring Court Bloom/Pink/Thorns and All Limited Edition

Size:

True to Size

•

Size:

Size and Fit Guide

Which COURT are you? TAKE THE QUIZ

Get It Before It's Gone

ACOTAR™ x Knix

Get It Before It's Gone

This limited-edition ACOTAR™ x Knix collection brings the Courts, characters, and defining moments of A Court of Thorns and Roses™ to life through original silhouettes and exclusive prints across lingerie, sleepwear, and Knix’s signature leakproof underwear. Shop the Collection

Return Policies

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 68 Points

Part of the limited-edition ACOTAR™ x Knix Collection

Our best-selling leakproof underwear in a limited-edition ACOTAR™ 3-pack. With stunning prints and imagery inspired by the Spring Court.

Comfort-First Fit

Thong silhouette sits lower on the hip with minimal bum coverage.

Worry-Free Protection

Our newest leakproof innovation provides more absorbency without the bulk. Patented 360 LeakSeal™ technology locks in leaks at every edge.

Moderate Absorbency

It absorbs about 2 regular tampons worth of liquid—great for regular flow days, light bladder leaks, and sweat.

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 your regular underwear.

ACOTAR™ is a trademark of Fireheart Inc. ©2015-2026, Sarah J. Maas.

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Orlane has 40” hips wearing KNIX M | | Spring Court Bloom/Pink/Thorns and All
Orlane has 40” hips wearing KNIX M | | Spring Court Bloom/Pink/Thorns and All
Orlane has 40” hips wearing KNIX M | | Spring Court Bloom/Pink/Thorns and All
Orlane has 40” hips wearing KNIX M | | Spring Court Bloom/Pink/Thorns and All

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
ACOTAR™ x KNIX

Choose your Court. Choose your fantasy.

Explore the limited-edition collection of intimates, sleepwear, and apparel inspired by the characters who rule the realm.

The Night Court

Starry skies. Unforgettable Nights. Made for deep bonds and a little...spice.
Shop the Collection

4.0
Rated 4.0 out of 5 stars
Based on 299 reviews
What our customers are saying
Customers say these leakproof thongs offer good protection and comfort for light days, gym wear, and everyday use. Many reviews mention significant sizing inconsistencies, with most recommending sizing up at least one size from usual underwear sizes. Common feedback includes concerns about stiff material and tight fit, particularly around the waistband and edges. While some find the fabric less stretchy than expected, others praise the seamless design and confidence it provides. Frequent comments address the protective gusset placement, with mixed experiences on coverage effectiveness. Reviews are divided on durability and comfort after washing.
74%would recommend these products
FitRated -0.2 on a scale of minus 2 to 2
ComfortRated 4.0 on a scale of 1 to 5
EffectivenessRated 4.1 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
299 reviews
  • Rated 1 out of 5 stars
    35 minutes ago
    Terrible material

    First time purchasing this brand. The fabric feels like stretchy plastic. Just awful

    J
    JN
    Verified Reviewer
    Reviewing
    Light Leakproof UltraThin™ No-Show Thong 3-Pack
  • Rated 5 out of 5 stars
    3 days ago
    Best Extra Defence!

    These underwear are great! I love using them as backup or at a cycle end or beginning, they look and feel just like regular underwear but keep you protected! I’m a small in other underwear brands, and am also a small in this brand! Bands are perfect, not tight or uncomfortable. Super great for value and will save you the costs of pads or liners!

    BP
    Brittany P.
    Verified Buyer
    Reviewing
    Light Leakproof UltraThin™ No-Show Thong
  • Rated 3 out of 5 stars
    4 days ago
    3 Stars

    Fits on the smaller side but comfy

    C
    Ciara
    Reviewing
    Light Leakproof UltraThin No-Show Thong
  • Rated 5 out of 5 stars
    2 weeks ago
    Bring Back More Styles

    I love Knix underwear, it’s the only thing in my drawer. I would like to see more variety, however, not just boring black and nude. I’ve been wearing Knix underwear for at least six years now and I have had some very pretty pairs that just don’t seem to exist anymore. I have thong pairs that have a beautiful lace back to them and I don’t see any like that anymore. Please bring back the lacy, pretty thong underwear in anything but black and nude.

    K
    Kari
    Verified Reviewer
    Reviewing
    Light Leakproof UltraThin No-Show Thong - Last Call
  • Rated 4 out of 5 stars
    2 weeks ago
    Stiffer material, clunkier pad

    I’m replacing some pairs from a few years back and this model feels like a stiffer material and the transition to the pad and the front is very visible (i.e. the pad looks puffy)

    MO
    Maggie O.
    Verified Buyer
    Reviewing
    Light Leakproof UltraThin No-Show Thong
  • Rated 4 out of 5 stars
    2 weeks ago
    Fits well

    Fit well and shipping was quick. Bought these more for a panty liner effect and they do a good job

    NR
    Nicole R.
    Verified Buyer
    Reviewing
    Light Leakproof UltraThin No-Show Thong
  • Rated 5 out of 5 stars
    3 weeks ago
    Leakproof No-show Thong

    Great fit. LOVE the color.

    DJ
    Delsheta J.
    Verified Buyer
    Reviewing
    Light Leakproof UltraThin No-Show Thong
  • Rated 3 out of 5 stars
    3 weeks ago
    Soft but Off Sizing

    This is my second pair of Knix. I absolutely love the other pair (French cut) and purchased a size small. I bought these in the same size and they fit much smaller.

    LF
    Lauren F.
    Verified Buyer
    Reviewing
    Light Leakproof UltraThin No-Show Thong
  • Rated 5 out of 5 stars
    1 month ago
    Nice and Sleek

    Love neutral colors and fits great.

    KG
    Kylleesha G.
    Verified Buyer
    Reviewing
    POS - Light Leakproof UltraThin No-Show Thong (Zskus)
  • Rated 4 out of 5 stars
    1 month ago
    Runs small

    The fabric is very nice / buttery feeling - the size is on the smaller size - I am usually a medium and had to go to a large.

    CF
    Catherine F.
    Verified Buyer
    Reviewing
    Light Leakproof UltraThin No-Show Thong
  • Rated 5 out of 5 stars
    1 month ago
    Comfy

    No show comfy

    CB
    Cindy B.
    Verified Buyer
    Reviewing
    Light Leakproof UltraThin No-Show Thong
  • Rated 5 out of 5 stars
    1 month ago
    Neutral colors

    Love it and happy with the feel.

    KG
    Kylleesha G.
    Verified Buyer
    Reviewing
    Light Leakproof UltraThin No-Show Thong

Your ACOTAR™ x Knix questions, answered.