Join Our Rewards Program
Earn rewards and exclusive member-only benefits for free.
Leakproof UltraThin No-Show Bikini - Last Call
Sale
Leakproof UltraThin No-Show Bikini - Last Call
$18.90
CAD
$27.00
30-40% 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.
Rewards Members Earn
18 Points
You May Also Like
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 regular underwear.
Zoom
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
Recently Viewed
Explore Best-Sellers
Shop All
Adds one cup size
Uplift Push Up Bra
$78.00
CAD
Color: Rose Water
+1
Our #1 Bra
Revolution V-Neck Bra
$68.00
CAD
Color: Black
+9
WingWoman Contour Bra
$75.00
CAD
Color: Black
Best Seller
Super Leakproof® Dream Boxer™
$48.00
CAD
Buy More, Save More
Color: Blue Stripe
+2
High Support
Catalyst Sports Bra
$85.00
CAD
Color: Zebra Limited Edition
+2
Leakproof UltraThin No-Show High Rise
$32.00
CAD
Buy More, Save More
Color: Warm Sand
+6
Total 5 star reviews: 553 Total 4 star reviews: 77 Total 3 star reviews: 49 Total 2 star reviews: 32 Total 1 star reviews: 46
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 2 weeks 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.
85%would recommend these products
Search
Keywords
Rating
Height
Pant Size
Pant Size Purchased
757 reviews
- Rated 5 out of 5 stars4 minutes agoLove them!!!
These panties are perfect for me and anyone that has ever had to deal with the situation I have leaking in my panties
Deborah P.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini - Rated 5 out of 5 stars7 hours agoComfie
Bought these to match bra. Comfortable and true to size
Sandra J.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini - Rated 5 out of 5 starsYesterdayHappy with purchase
Comfy and cute!
Heather R.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini - Last Call - Rated 5 out of 5 stars3 days agoSleek!
My girls LOVE these no-show undies! They like the feel and that they aren't bulky at all. They work well and keep my girls feeling confident and comfortable.
Julie D.Verified BuyerReviewingTeen Leakproof UltraThin No-Show Bikini - Rated 5 out of 5 stars3 days agoVery comfortable
I have been excited to try ever since the birds papaya shared these. They are even better than I thought they’d be!
Catie S. J.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini - Rated 5 out of 5 stars3 days agoGreat for autistic tween
These are great for a child with special needs who gets overwhelmed with period products.
Kelly B.Verified BuyerReviewingTeen Leakproof UltraThin No-Show Bikini 3-Pack - Rated 5 out of 5 stars4 days agoBetter than I expected
Can't wait to order more. I have tried a couple other "period panties" and these by Knix arw by far the best!
Amanda F.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini - Rated 5 out of 5 stars4 days agoCute print comfy fit
Absolutely love the print I got on these and they fit so wonderfully now that I've figured out my sizing
Alexandra B.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini - Rated 5 out of 5 stars4 days agogreat
perfect
Julie L.Verified BuyerReviewingTeen Leakproof UltraThin No-Show Bikini - Rated 5 out of 5 stars6 days agoAprilO
Leakproof underwear great for light bladder leaks
April O.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini - Rated 5 out of 5 stars6 days agoLeakproof
Great for light bladder leaks
Cindy O.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini - Rated 5 out of 5 stars6 days agoAbsolute Favourite
While I’m writhing in pain, the last thing I want to worry about is leaking. This product has given me comfort and ease of mind.
April J.Verified BuyerReviewingLeakproof UltraThin No-Show Bikini
