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-82% Nylon+18% Spandex
Smooth, silky nylon-spandex blend with excellent elasticity and quick-drying properties. Feels soft against skin, retains shape wash after wash
Absorption Zone – Smart Protection for Moderate Flow Days
The LY521 features a strategically placed absorption zone designed to cover the exact area needed during your period. Unlike full-coverage designs, this optimized layout provides reliable leak proof protection while reducing unnecessary fabric buildup. The result is a bikini period underwear that feels lightweight, breathable, and comfortable—perfect for daily wear and moderate flow days.
- Trusted by over 200,000 happy users.
- Loved & reordered by big brands.
- 12 Hours Sustainability.
- Up to 40ml absorbency.
- S - 6XL Plus Size Options.
Optimized for Moderate Flow – 20–30ml Absorption Capacity
Engineered specifically for moderate flow period underwear, the absorption zone holds 20–30ml of fluid (equivalent to 3–4 regular pads). The multi-layer core features instant absorption technology, locking liquid away quickly to keep the surface dry. With side leak protection and a double layer front for added security, you can move through your day with total confidence—whether at work, at the gym, or asleep at night.
Thin & Breathable – Leak-Proof Without the Bulk
Say goodbye to bulky protection. The LY521’s absorption zone is ultra-thin—about one-third the thickness of a regular pad—while still delivering powerful leak proof performance. Breathable materials and a high elastic waistband ensure all-day comfort, while the side anti-leakage waterproof strips provide 360° protection. It’s the perfect choice for women seeking comfortable period underwear that looks and feels like regular bikini panties.
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 is the absorption capacity of the LY521? How many pads does it equal?
designed for moderate flow days and can hold 20–30ml of fluid, which is equivalent to 3–4 regular sanitary pads. The multi-layer absorption core locks liquid away quickly, keeping the surface dry and comfortable. For heavier flow days, we recommend our heavy-flow styles like LY3032 (holds 30–40ml).
How does the side leak protection work? Will it leak during sleep or exercise?
The LY521 features side anti-leakage waterproof strips along the leg openings, creating a protective barrier that prevents liquid from escaping—even during movement, sleep, or exercise. Combined with the double layer front panel, this 360° protection system ensures you stay dry and confident all day long, no matter your activity level.
How should I wash and care for my period underwear to make it last longer?
| To maximize the lifespan of your LY521: Rinse in cold water immediately after wear, then machine wash on a gentle cycle with similar colors. Do not use fabric softener as it can reduce absorbency. Hang dry only—do not tumble dry. With proper care, your period underwear can last 2+ years. Learn more in our complete care guide. |
What is the MOQ for private labeling or customizing the LY521 bikini period underwear?
| For customized orders (logo, custom packaging, etc.), our MOQ is 500 pieces per style per color. For in-stock items ready to ship, there is no MOQ—you can order as little as 10–20 pieces for sampling or small-batch testing. We offer flexible solutions for startups and established brands alike. Contact us for a quote based on your specific needs. |
Do your period underwear have any safety or quality certifications? Are they PFAS-free?
| Yes, all LY521 period underwear are manufactured in our OEKO-TEX® certified facility using GRS-certified materials. Our fabrics are PFAS-free, ensuring no harmful chemicals are used. We are also SEDEX (SMETA) certified, guaranteeing ethical labor practices and supply chain transparency. Safety and sustainability are at the core of everything we make. |
