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Leakproof UltraThin No-Show High Rise 3-Pack
ACOTAR™ x Knix
Leakproof UltraThin No-Show High Rise 3-Pack
$80.00
CAD
Limited-edition ACOTAR™ x Knix collection
Absorbs about 2.5 super tampons
Invisible under clothes
Moderate protection without the bulk
Machine washable
Size and Fit Guide
How to Measure
In order to select the correct sizing, we recommend you take the following measurements using a soft tape measure. If necessary, ask someone else to help.
Waist
Measure around the narrowest part of your torso, usually just above your belly button. Keep the tape snug and level, but not tight. The number where it meets is your waist measurement.
Hip
Stand with your feet together and measure around the fullest part of your hips and buttocks. Keep the tape level and snug, but not tight. The number where it meets is your hip measurement.
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ACOTAR™ x Knix
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Part of the limited-edition ACOTAR™ x Knix Collection
High Rise Silhouette
Moderate Absorbency
Absorbs 2.5 super tampons worth of liquid—perfect for moderate flow days, light bladder leaks, and sweat. The carbon cotton gusset top layer keeps you dry.
Worry-Free Protection
Perfect for moderate period days, light bladder leaks, and sweat. Moisture-wicking liner keeps you dry and comfortable.
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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How to Choose?
Essential
- • Days you don’t need leak protection. Everyday freshness and moisture wicking.
-
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.
-
about 8-14 tsp
-
about 1.5-3 regular pads
-
about 4-7 super tampons
-
about 1.5-3 menstrual cups
Light
- • Daily freshness. For sweat, discharge, period spotting, or backup protection.
-
about 1-3 tsp
-
about 1-3 pantyliners
-
about 1-3 regular tampons
-
about 0.5 menstrual cups
Moderate
- • For mid-cycle flow, surprise cough or sneeze leaks, or a really sweaty spin class.
-
about 4-8 tsp
-
about 1-1.5 regular pads
-
about 2-4 super tampons
-
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.
-
about 15-20 tsp
-
about 1.5-2.5 super pads
-
about 7-11 super tampons
-
about 2-3 menstrual cups
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Recently Viewed
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 5 months ago
Customers say these high-rise underwear are extremely comfortable and feel like wearing nothing at all. They appreciate the soft, silky fabric and the confidence they provide for bladder leaks and light incontinence. Many find them perfect for workouts, with no panty lines and excellent all-day protection. Users consistently mention the comfortable fit and reliable leak protection. However, some note sizing inconsistencies between colors and styles, with several finding them smaller than expected. A few customers mention the waistband sits very high, which some love for today's fashion while others find it too high. Common feedback includes concerns about the protective pad placement and occasional fit issues around the legs.
86%would recommend these products
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Usual Pant Size
1,428 reviews
- Rated 5 out of 5 stars20 hours agoBest Ever Undies!
Love them! Quality, comfort and confidence in every pair! Will purchase again and I am telling all my friends how comfortable they are.
MSMary S. A.Verified BuyerReviewingLeakproof UltraThin No-Show High Rise 3-Pack - Last Call Eucalyptus/Rose Quartz/Rosewood / L - Rated 5 out of 5 stars20 hours agoBest Ever Undies!
Quality, comfort and confidence in every pair. This is my second purchase and I will most certainly purchase again.
MSMary S. A.Verified BuyerReviewingLeakproof UltraThin No-Show High Rise 3-Pack Mulberry/Pink Party/Wild Iris / L - Rated 5 out of 5 stars23 hours agoPerfect
Love the new Ultra Thin! I have three pairs of the older thicker ones that I only use for light bladder leaks. While they did the job, they were just a little bulky. The ultra thins are absolutely perfect!
RPRobin P.Verified BuyerReviewingLeakproof UltraThin No-Show High Rise - Rated 5 out of 5 stars3 days agoThe greatest protector
Love underwear thin and a no-show unable see through your clothes, I use moderate best protector for the morning. I’ve been using Knix underwear for quite a few years.
JMJenobeba M.Verified BuyerReviewingPOS - Leakproof UltraThin No-Show High Rise (ZSkus) Black with White Polka Dot / L - Rated 5 out of 5 stars4 days agoNo show high rise underwear
Comfortable
Love material
Effective
SRSelina R.Verified BuyerReviewingLeakproof UltraThin No-Show High Rise Sola / L - Rated 5 out of 5 stars6 days agoKnix
Love them. Very comfortable,
I do not constantly worry about washroom locations, I know i have a few moments.
HNHelena N.Verified BuyerReviewingLeakproof UltraThin No-Show High Rise Mulberry / L - Rated 5 out of 5 stars6 days agoLove the colour and great fit!
These are an upgrade of Knix for me...I am actually a small not a medium so enjoy the smooth fit of these!
HYHeather Y.Verified BuyerReviewingLeakproof UltraThin No-Show High Rise Mulberry / M - Rated 5 out of 5 stars1 week agoHigh rise pack
Good price for 3 pair.
I bought XL, as usual, but found them more “ snug” than others I recently bought. Different factory, different cutters at the machines?
They are not uncomfortable, just mentioning the difference in case other people find similar situation.
MRMary R.Verified BuyerReviewingLeakproof UltraThin No-Show High Rise 3-Pack - Last Call Eucalyptus/Rose Quartz/Rosewood / XL - Rated 5 out of 5 stars1 week agoGood-looking and Reliable
These fit well, are attractive, and give peace of mind with protective quality.
SWSharon W.Verified BuyerReviewingLeakproof UltraThin No-Show High Rise Sola / XL - Rated 5 out of 5 stars1 week ago5 Stars
Must have. Comfy and reliable!
SSarahReviewingLeakproof UltraThin No-Show High Rise 3-Pack Mulberry/Pink Party/Wild Iris / M - Rated 5 out of 5 stars1 week agoThey FIT my season of life
No more sudden sneeze surprises. As well as exercising to correct that, KNIX has my back. Perfect fit and perfect quality as always.
DMDiane M.Verified BuyerReviewingLeakproof UltraThin No-Show High Rise Black / XL - Rated 5 out of 5 stars1 week agoNew
I always like wearing the knix light for small bladder leaks.
DBDenise B.Verified BuyerReviewingLeakproof UltraThin No-Show High Rise
