Join Our Rewards Program
Earn rewards and exclusive member-only benefits for free.
Leakproof UltraThin Mesh Bikini
Sale
Leakproof UltraThin Mesh Bikini
$18.90
USD
$27.00
30% off
Absorbs 3 super tampons
Invisible under clothes
Perfect for daily wear
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
Product Description
Comfort-First Fit
This mesh bikini-style underwear offers medium coverage for the hips and bum.
Sleek Mesh Panels
Worry-Free Protection
Our original leakproof technology offers a barely there feel while patented bonded edges help prevent side leaks.
Moderate Absorbency
Absorbs about 3 super tampons worth of liquid—great for moderate flow days, light bladder leaks, and sweat.
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
Our Best-Selling Underwear
Shop All
#1 Overnight Solution
Super Leakproof® Dream Boxer™
$48.00
USD
Buy 3+ Save 15%, Buy 5+ Save 20%
Color: Eucalyptus Stripe Limited Edition
+1
24 Hrs Only ⏰
Super Leakproof® Dream Short™
$36.00
USD
25% off
Color: Twilight Navy
+1
Sale
Leakproof UltraThin No-Show High Rise
$22.40
USD
20-30% off
Color: Meadows Limited Edition
+5
Sale
Leakproof UltraThin No-Show Bikini
$18.90
USD
20-30% off
Color: Lavender Limited Edition
+3
Sale
Leakproof UltraThin No-Show French Cut
$18.90
USD
20-30% off
Color: Lavender Limited Edition
+2
PATENTED LEAKPROOF TECHNOLOGY
Built-in protection that feels like nothing at all
Our original Fresh Fix Technology® features a built-in absorbent liner absorbing about 1 regular tampon worth of liquid so you feel fresh and in-control.
Soft Top Layer
Middle Layer
Leakproof Layer
Recently Viewed
How to wash
Knix underwear is 100% reusable and machine washable, just like your regular undies.
Not required. But for best results, you can rinse your leakproof with cold water in the tub or sink before washing.
Machine wash on a cold, gentle cycle with mild detergent.
For their longest life, air drying is best. Hang or lay flat to dry.
Fabric softeners, bleach, ironing, or heat from the dryer.
