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Super Leakproof® No-Show Bikini - Original - Last Call
Last Call
Super Leakproof® No-Show Bikini - Original - Last Call
$20.30
USD
$29.00
30% off
Absorbs about 4 super tampons
Invisible under clothes
Extended gusset for extra protection
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
Classic mid-rise silhouette with provides medium hip and bum coverage.
Worry-Free Protection
Patented bonded edges help prevent side leaks.
Moderate Absorbency
Absorbs 4 super 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 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: 2.3k Total 4 star reviews: 367 Total 3 star reviews: 143 Total 2 star reviews: 90 Total 1 star reviews: 90
What our customers are saying
Generated by AI from 100 most recent customer reviews
Last updated 3 months ago
Customers say these period underwear are comfortable and feel like regular underwear, with many praising their leak protection and confidence-boosting qualities. Users appreciate the no-show design under clothing and find them effective for both period protection and light bladder leaks. Many reviews mention the bikini cut runs small, with several customers recommending sizing up for a better fit. Some note the underwear can feel tight around the waist or create visible lines under certain clothing. While most find them durable and long-lasting, a few mention issues with the newer versions feeling stiffer or having ridges where seams meet. Overall, customers value the comfort and protection these provide as an alternative to disposable products.
92%would recommend these products
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How do you use your Leakproof?
Usual Pant Size
2,985 reviews
- Rated 4 out of 5 stars2 days agoFit could be a little better
They feel a bit loose even though I ordered the small which is the correct size for me. The legs could use a bit more elastic. They feel loose and seem to bow out in the back a bit
LLVerified BuyerReviewingSuper Leakproof® No-Show Bikini - Rated 3 out of 5 stars6 days ago3 Stars
Wish elastic around the legs was tighter. Feels a bit loose. Ordered a small
LLisaReviewingSuper Leakproof® No-Show Bikini - Rated 3 out of 5 stars6 days ago3 Stars
Wish the elastic around the legs was tighter. Feels a bit loose. Ordered small
LLisaReviewingSuper Leakproof® No-Show Bikini - Rated 5 out of 5 stars1 week agoWorth the hype!
I’ve been super skeptical about these for a while now and finally decided to buy a pair during a sale. MAN! Have I been missing out!! They truly are no shows while also being absorbent enough to handle day one with PCOS and Endometriosis (iykyk). Worth every single penny!
ACAnna C.Verified BuyerReviewingSuper Leakproof® No-Show Bikini 3-Pack - Original - Last Call - Rated 5 out of 5 stars2 weeks agoMypanties
I have been wearing KNIX for several years. I appreciate the fit and the comfort they provide. Thank you
DBDeborah B.Verified BuyerReviewingSuper Leakproof® No-Show Bikini 3-Pack - Original - Last Call - Rated 5 out of 5 stars2 weeks agoSuper
Great fit. On the expensive side for me on a fixed income.
DMDonna M. P.Verified BuyerReviewingSuper Leakproof® No-Show Bikini - Rated 4 out of 5 stars2 weeks agoPerfect!
These have a great fit and the protection is wonderful. They do show in jeans but I use the super leakproof at night.
SBSarah B.Verified BuyerReviewingSuper Leakproof® No-Show Bikini - Rated 5 out of 5 stars2 weeks agoBikini Brief
Absolutely love and recommend them. I have quite a few pairs and they're the best decision I could've made. Super comfortable and I have no concerns about leaks. I have a very physical/demanding job and I can do it without concerns now
KKnix2 weeks agoHey Dawn!
This is amazing! We're so happy our Super Leakproof No-Show Bikini keeps you comfortable and confident during your demanding workdays. Thanks for the awesome recommendation!
Team Knix
DSDawn S.Verified BuyerReviewingSuper Leakproof® No-Show Bikini - Rated 5 out of 5 stars3 weeks ago5 Stars
These are amazing. They work great and I don’t have to worry about leaks or smelling like I’m on my period.
AAbigailReviewingSuper Leakproof® No-Show Bikini - Rated 5 out of 5 stars3 weeks ago5 Stars
Very nice, felt comfortable and secure and stress free
KKaitlynReviewingSuper Leakproof® No-Show Bikini Kit* - Rated 5 out of 5 stars1 month agoLove These
Returning customer. Knix has changed my life. Always impressed with the coverage and comfort of these underwear.
KKnix1 month agoHey Brianna!
This makes our hearts so happy! We're thrilled to hear Knix has been such a game-changer for you. Thank you for being such an amazing returning customer!
Team Knix
BSBrianna S.Verified BuyerReviewingSuper Leakproof® No-Show Bikini - Rated 1 out of 5 stars1 month agoNot the slightest bit leakproof
Came right out the sides like it was water-resistant in there. So sad. :(
DIDeanna I.Verified BuyerReviewingSuper Leakproof® No-Show Bikini 3-Pack
