Night Defense Essential Inertia Overnight Underwear™
Night Defense Essential Inertia Overnight Underwear™
Night Defense Essential Inertia Overnight Underwear™
Night Defense Essential Inertia Overnight Underwear™
Night Defense Essential Inertia Overnight Underwear™
Night Defense Essential Inertia Overnight Underwear™
Night Defense Essential Inertia Overnight Underwear™
Night Defense Essential Inertia Overnight Underwear™

Night Defense Essential Inertia Overnight Underwear™

  • INNOVATIVE PERIOD CARE - Inspired by a rising trend in Korea, this unique hybrid between an overnight pad and period underwear provides the ultimate period protection and comfort.
  • 100% CERTIFIED ORGANIC COTTON TOP SHEET - Made with OCS certified, non-GMO cotton, Grown without the use of toxins, pesticides or synthetic chemicals.
  • MAXIMUM COVERAGE & ABSORBENCY - Built-in 4-layer core instantly absorbs odor and holds as much as 4 regular pads to keep you leak-free all night for up to 12 hours.
  • SECURE & COMFORTABLE FIT - Feels like regular underwear but with 360° leak prevention and curve-hugging fit for all-day comfort.
  • HEAVY FLOW SUPPORT - Ideal for overnight support, heavy flows, teens and tweens with irregular cycles, and postpartum bleeding.
Size
  • m
  • l
  • xl
Counts
  • 4 Pack [32 counts]
$55.00
$75.96
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Description

Direction

Ingredients

Super-Long 44.7cm Leak Guard Core wraps the entire hip and back area for complete overnight protection.

Dual-Stitched Side Barriers

double layer leak defense with secure leak-guard banding and protective side skirts.

Ergonomic Body Fit Design contours perfectly to your body for all-night comfort. Finished with a 100% organic cotton cover and certified Dermatest Excellent for proven skin safety.

1. When unfolded, the waistband with the red printed line indicates the front side.

2. Wear from the bottom up just like regular underwear. (Do not wear with additional underwear; use alone.)

3. After use, roll up the product tightly from the bottom.

4. Pull the side waistbands together and tie them for neat disposal.

5. Dispose of in a trash bin—do not flush.

100% Organic Cotton Cover: soft and gentle on skin
Breathable Film: long lasting airflow and freshness
SAP-FREE Absorbent Core – free from microplastics, gentle on skin
Certified Dermatest Excellent

SHAPE

ABSORPTION

ORGANIC

CLINICAL TEST

Body-Contoured Comfort
Designed to Fit Your Natural Shape

From bedtime to morning, INERTIA Overnight Underwear moves with your body for all-night ease. 

The micro-fit waistband comes in 3 sizes 
for a snug yet pressure-free fit, 
while the high-waist design gently hugs 
the lower belly for cozy, secure comfort.
- SAP-Free, Plastic-Free Absorbent Core
- Exclusive Patent from Women-Led R&D
- Inspired by Hemostatic (Bleeding-Control) - Technology
- Gentle Enough for Sensitive Skin
360° Leak-Lock Protection
No leaks. No pooling. No wake-ups.

It features a 360° leak-guard design 
that protects from every angle—even 
while you toss and turn. 

The 44.7 cm super-long core wraps the hips and back for complete coverage, 
while side skirts provide extra defense against leaks. 
- 44.7 cm Super-Long Core – full hip & back coverage
- 360° Absorption System – blocks leaks from all directions
- Side Skirt Leak Guards – prevent side leaks during movement
- SAP-Free, Plastic-Free Core – gentle and safe for skin
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100% Cotton Cover
Soft, Gentle, and Breathable

The cover that touches your skin is made with 100% pure cotton—
delivering soft comfort without irritation. 

Thin yet highly absorbent, the cotton cover works together with a breathable film 
to provide lasting airflow and freshness 
all night long.
- 100% Cotton Cover on Skin-Contact Layer
- Gentle Softness Without Irritation
- Lightweight Yet Highly Absorbent
- Breathable Film for Long-Lasting Freshness
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Clinically Proven, 
Dermatologist Tested
Your skin deserves proof, not promises.

Our pads have been dermatologically tested and rated “Excellent” by Dermatest®, 
one of the world’s most trusted skin safety labs in Germany.

We test for irritation, allergens, sensitivities, and daily use safety.
- “Excellent” Rating by Dermatest® Germany
- Allergy Patch Test Completed
- Suitable for Daily Use
- Safe for Sensitive & Intimate Skin
- Tested on Real Women, Not Just Data
Ordering Made Simple
  • Subscribe & Save

    Stay stocked without the stress.
    Get your INERTIA essentials delivered regularly at a discount. Cancel anytime.
  • One-Time Buy

    Just need one box?
    Order whenever you want, no subscription needed.
  • Support Women, Globally

    Every purchase helps us provide period care products and education to women in underserved communities—because dignity in health should be universal.
Find Your Flow
We know every body's flow is unique, 
that's why we've got you covered with 
our range of pad options.
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Frequently Asked Questions
Are Inertia pads safe for sensitive skin?
Yes.
All Inertia pads are dermatologist-tested, hypoallergenic, and free from plastic, fragrance, chlorine, dyes, and phthalates. Crafted with 100% certified organic cotton and Labocell™ cores, they’re ideal even for the most reactive skin.
Does it really not leak?
Yes. It’s built with dual leak-proof protection—double-locking side skirts plus side guards and a leak-guard band. 
On top of that, the 44.7 cm full-length core gives you 360° leak protection. No leaks, even overnight.
How should I choose between Regular, Medium, or X-Large?
  • Regular: Up to US Medium (US 8–10, EU 40–42)
  • Medium: US Medium (US 8–10, EU 40–42) ~ US X-Large (US 16–18, EU 48–50)
  • X-Large : above US X-Large
Recommendation: Start with Medium and adjust based on your flow and comfort needs.
Do you ship to my country?
We currently ship across the U.S. with standard and expedited options.
 International shipping is available to select countries (Canada, EU, Australia). Duties and taxes may apply—costs will be calculated at checkout.