Join Our Rewards Program
Earn rewards and exclusive member-only benefits for free.
Essential Mystery 3-Pack
Summer Sale
Essential Mystery 3-Pack
$26.00
USD
$75.00
Save $49
Essential for non-leak days
Quick dry liner for all day freshness
Machine washable
Set includes: 3 mystery undies
See Details
Mystery Essential Kit*
Color: Mystery Limited Edition
Size:
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.
Size:
Mystery Essential Kit*
Color: Mystery Limited Edition
Size:
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.
Size:
Mystery Essential Kit*
Color: Mystery Limited Edition
Size:
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.
Size:
Free Wash Bag
Rewards Members Earn
26 Points
Get a surprise selection of our best-selling silhouettes
This Kit Includes:
3 x Essential Non-Leakproof Underwear
Free Wash Bag
This handy wash bag helps keep your favorite Knix styles lasting even longer. Just throw your bras, tops, and bottoms in, zip it up, and toss it in the washing machine.
Choose your size and be surprised by the colors and silhouettes
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
Explore Best-Sellers
Shop All
Restocked
Super Leakproof® Mini Dream Boxer
$48.00
USD
Buy More, Save More
Color: Blue Stripe Polka Dot Limited Edition
+2
Our #1 Bra
Revolution V-Neck Bra
$65.00
USD
Color: Black
+6
Super Leakproof® Dream Short™
$42.00
USD
Color: Twilight Navy
+2
WingWoman Contour Bra
$68.00
USD
Color: Black
Adds one cup size
Uplift Push Up Bra
$68.00
USD
Color: Warm Sand
+2
High Support
Catalyst Sports Bra
$78.00
USD
Color: Zebra Limited Edition
+1
