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Leakproof UltraThin No-Show Bikini Shimmer 3-Pack - Sale
Flash Sale ⚡️
Leakproof UltraThin No-Show Bikini Shimmer 3-Pack - Sale
$52.50
CAD
$75.00
30% off
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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Comfort-First Fit
Bikini silhouette with a classic mid-rise fit, medium hip and 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
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.
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.
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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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Total 5 star reviews: 601 Total 4 star reviews: 86 Total 3 star reviews: 51 Total 2 star reviews: 34 Total 1 star reviews: 49
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 3 months ago
Customers say these period underwear are comfortable and provide effective protection without the bulk of traditional pads. Many appreciate the soft, buttery fabric that feels like regular underwear and the no-show design under clothing. Users frequently mention confidence during workouts, daily activities, and even swimming. Parents often purchase these for teenage daughters who love the comfort and security they provide. Common feedback includes praise for the absorbency and leak-proof performance. However, several reviews mention sizing inconsistencies, with some finding recent purchases run smaller than previous orders. A few customers note the leg holes can feel tight or that the fit varies between different fabric types.
86%would recommend these products
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821 reviews
- Rated 5 out of 5 stars5 minutes ago5 Stars
Love the cute pattern! Comfy and seamless
LLyndsayReviewingLeakproof UltraThin No-Show Bikini Black with White Polka Dot / S - Rated 5 out of 5 stars6 minutes ago5 Stars
Perfect fit! Seamless and comfortable
LLyndsayReviewingLeakproof UltraThin No-Show Bikini Blackberry / S - Rated 5 out of 5 stars17 hours agoLove my period panties!
I love my Knix period panties so much. I'm 5'3", 140 lbs, and I started off with the medium. They were snug but comfortable, and I've learned over time that they stretch as thwy relax. I now start off with smalls and let them relax to a comfy size.
KPKarissa P.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini - Last Call Meadows / S - Rated 5 out of 5 stars3 days agoLOVE 💕
These bikini undies are so cute, and do the job really well! So glad I purchased them 😊.
BKBarbara K.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini - Rated 5 out of 5 stars4 days ago5 Stars
Bon produits et livraison rapide.
LLucieReviewingLeakproof UltraThin No-Show Bikini 3-Pack - Last Call Eucalyptus/Rose Quartz/Rosewood / XS - Rated 5 out of 5 stars4 days ago5 Stars
Love these great colour
BBrooklynReviewingLeakproof UltraThin No-Show Bikini Blackberry / M - Rated 5 out of 5 stars5 days agoGreat
Awesome. Been wearing this style for more than a year now. They fit well, stand up over time, comfortable and very functional.
MBMelissa B.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini Black / L - Rated 5 out of 5 stars1 week agoLeakprrof UltraThin No-Show Bikini 3-pack
Great panties ... would recommend!
MDMonique D.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini 3-Pack - Last Call Eucalyptus/Rose Quartz/Rosewood / M - Rated 5 out of 5 stars1 week agoLove them!
Love using Knix as a backup, and with UltraThin, I don’t feel like I’m wearing a diaper.
LNLindsay N.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini - Last Call Eucalyptus / L - Rated 5 out of 5 stars2 weeks agoLeakproof Ultra thin bikini
Great fit, smooth. No worries of the little leaks!
ABAudrey B.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini 3-Pack - Last Call Eucalyptus/Rose Quartz/Rosewood / M - Rated 5 out of 5 stars2 weeks agoLove, love, love them
The ultra thin no-show is sooo comfortable that you don't even realize that you have them on. These are my favorite.
RGRobyn G.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini 3-Pack - Last Call Eucalyptus/Rose Quartz/Rosewood / L - Rated 5 out of 5 stars2 weeks agolove love love it!!!
always as I expect it, correct sizing and fabric make it my go-to
JMJude M.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini - Last Call Eucalyptus / M