Customization Options
Product Description
4 Layers Incontinence Menstrual Underwear
We’re patented for a reason. Independently lab tested and scientproven to keep you dry, fresh and odour controlled.
01 Inside Layer-95% Cotton+5% Spandex
Soft & breathable fabric, skin-contact layer with no irritation.Rapidly wick:moisture to keep skin dry.
02 Absorb Layer-390gsm 80% Polyester+20% Nylon
The absorbent layer uses polyester, quickly locks in menstrual blood/discharge, no rewetting-even for heavy flow.
03 Leak Proof Layer-Breathable PUL
We use PUL,a soft and safe waterproof material with no harmful chemicals. Itkeeps liquid inside but still lets air flow.
04 Outer Layer-95% Bamboo+5% Spandex
Natural bamboo fiber: Excellent breathability &moisture-wicking, quicklydissipates heat. Inherently antibacterial to reduce odor. Soft, skin-friendly.
Absorption Zone – Extended Full Coverage, Zero Gaps
The absorbent layer runs the entire length of the gusset—front waistband to back waistband. No shortcuts, no skimpy coverage. For full gusset period panties, this is what heavy flow protection looks like. Whether you’re sleeping on your side, working out, or just going about your day, the protection stays where it should. No gaps, no leaks, no stress.
- Trusted by over 200,000 happy users.
- Loved & reordered by big brands.
- 12 Hours Sustainability.
- Up to 40ml absorbency.
- S - 6XL Plus Size Options.
Absorption Capacity – Heavy Flow, Honestly Rated
LY3154 is built for heavy flow days—real heavy, not “marketing heavy.” It holds significantly more than our moderate styles, enough that you can actually sleep through the night or get through a long workday without thinking about it. Here’s the honest truth: some customers need max protection. This is for them. For brands, this is your heavy-hitter option for customers who’ve been let down by “heavy flow” claims that didn’t deliver.
Fabric – Bamboo with Seamless Construction, OEKO-TEX Certified
The main fabric is bamboo—naturally antibacterial, so odor doesn’t build up even on heavy days. It’s breathable (so you don’t overheat), soft against skin, and holds up wash after wash. The seamless construction means no irritation and no visible lines. The leak-proof layer is extended full coverage with our best-selling technology that controls blood, sweat, and odor. Whole thing’s OEKO-TEX certified and PFAS-free. For buyers, that means clean materials, easy market compliance, and hypoallergenic period underwear that customers actually trust.
Who Is It Designed For
4 layers of our period panties
30x
Greater breathability
2x
large absorption capacity
17x
greater menbrane impermeability
first layer
skin-friendly inner layer
second layer
high-absorbency core layer
third layer
leak-proof barrier layer
Main substance
breathable outer layer
first layer
skin-friendly inner layer
second layer
high-absorbency core layer
third layer
leak-proof barrier layer
Main substance
breathable outer layer
waterproof strips
Waterproof edge strips for 360° leak protection
instant absorption
Instant liquid lock - stays dry on contact
antibacterial silver ions
Natural odor control, fresh all day
What's the difference between this and your moderate flow styles?
Two things: absorbent layer size and thickness. Heavy flow seamless panties have a larger absorbent zone that extends further front and back, plus a thicker core that holds more liquid. Same great fabric, same seamless comfort, just more capacity for when you need it.
I have really sensitive skin. Is bamboo actually better?
For sensitive skin, yeah—usually. Bamboo fibers are naturally smoother and rounder than synthetic fibers, so they create less friction. Plus it’s naturally antibacterial, which helps if you’re prone to irritation. And obviously OEKO-TEX certified means no random chemicals. It’s hypoallergenic period underwear that won’t fight with your skin.
I'm a retailer looking for heavy flow options. What's your in-stock situation?
We keep heavy flow seamless panties in stock in our most popular colors and sizes—black, nude, and a couple seasonal options. No minimums on stock styles, so you can order 10-20 pairs to test. For full custom (your colors, your tags), MOQ is 500 pieces per style per color and lead time is 60-75 days.
How do you test these for heavy flow? Like, what's the process?
We don’t just guess. We use lab testing with simulated fluid at specific flow rates to measure absorbency and leak prevention. Then we do real-person testing with volunteers who actually have heavy flows. Then we wash and test again. And again. By the time it ships, we know exactly what it can handle. No marketing fluff—just real data.
