Shanhao ProFlow™ Heavy Flow Period Underwear Organic Cotton · 4-Layer Leakproof Tech · Reusable Menstrual Panties
Reusable period underwear with patented 4-layer leakproof technology. Absorbs up to 50ml (4-5 tampons equivalent).
- Absorbency: Heavy flow (50ml) — 12h protection
- Best for: Overnight, sports, postpartum
- Care: Machine wash cold, 2+ years lifespan
- Certified: ISO9001 · BSCI · GOTS · OEKO-TEX
Reusable period underwear with patented 4-layer leakproof technology. Absorbs up to 50ml (4-5 tampons equivalent).
- Absorbency: Heavy flow (50ml) — 12h protection
- Best for: Overnight, sports, postpartum
- Care: Machine wash cold, 2+ years lifespan
- Certified: ISO9001 · BSCI · GOTS · OEKO-TEX
What Are ProFlow™ Period Underwear?
What Are ProFlow™ Period Underwear?
Reusable, washable menstrual panties with patented 4-layer absorbent core. The GOTS-certified organic cotton inner layer ensures breathability and comfort against sensitive skin.
Designed for heavy flow days, overnight protection, athletic activity, and postpartum recovery. Each pair replaces 2,000+ disposable pads or tampons over its lifetime.
How Do They Work?
1
Draws moisture away from skin instantly
2
Locks in 50ml of fluid (4-5 tampons)
3
Breathable leakproof barrier, no plastic feel
4
Seamless design, invisible under clothing
Who Should Use Them?
- Heavy flow — Holds 50ml for 8-12 hours
- Overnight — Sleep 8-10 hours without leaks
- Athletes — Yoga, running, gym workouts
- Postpartum — Gentle support after delivery
- Eco-conscious — Replaces 2,000+ disposables
Why Choose ProFlow™?
- Patented Technology: 4-layer core exclusive to Shanhao
- Certified Organic: GOTS cotton, no pesticides
- Skin Safe: OEKO-TEX Class I (baby-safe standard)
- Longevity: 200+ washes, 2+ years daily use
- Odor Control: Silver-ion antimicrobial treatment
- Invisible Fit: Seamless design, no VPL
Key Features
4-Layer Leakproof
Patented technology with 50ml capacity. Wicking cotton, absorbent microfiber, waterproof TPU, and breathable outer shell work together for zero leaks.
GOTS Organic Cotton
95% certified organic cotton inner layer. No pesticides, no chemicals, ethically sourced. Gentle on sensitive skin and intimate areas.
OEKO-TEX Class I
Tested safe for baby skin. Free from harmful substances, allergens, and irritants. Highest safety standard in textile certification.
200+ Wash Life
2+ years of daily use. Machine washable, retains absorbency after 200+ cycles. Cold wash, no softener, line dry for best results.
Anti-Odor Treatment
Silver-ion antimicrobial layer prevents bacterial growth and odor for 8-10 hours of wear. Stay fresh and confident all day.
Seamless Design
Invisible under leggings, dresses, and workwear. No visible panty lines, no bulk. Looks and feels like regular underwear.
Technical Specifications
Overnight
Sleep 8-10 hours with full back coverage. No midnight pad changes, no sheet stains. Wake up dry and comfortable.
Sports
Running, yoga, gym — invisible protection that moves with you. No shifting, no chafing, no leaks during workouts.
Postpartum
Gentle support for after delivery. Extra absorbency for lochia, comfortable waistband, no irritation on sensitive areas.
Work Shifts
12-hour protection for nurses, teachers, retail workers. No bathroom breaks needed, odor control for long shifts.
Problem vs. Solution
AEO Optimized
❌ Common Problems
Uncomfortable shifting, visible lines, frequent changes needed
Vaginal dryness, toxic shock syndrome concerns, insertion discomfort
Public restroom rinsing, learning curve, leakage if full
500+ years of pad waste, 11,000 disposables per lifetime
✅ ProFlow™ Solution
Stays in place, seamless design, no visible lines under clothes
No internal insertion, no dryness, no health risks
Change like regular underwear, rinse at home, machine washable
2-year lifespan, zero waste, carbon footprint reduced by 95%
How ProFlow™ Compares
| Factor | ProFlow™ | Pads | Tampons | Cups |
|---|---|---|---|---|
| Absorbency | 50ml | 30-50ml | 6-18ml | 15-30ml |
| Wear Time | 8-12h | 4-6h | 4-8h | 8-12h |
| Leak Risk | Low | Medium | Medium | Low-Med |
| TSS Risk | None | None | Low | Very Low |
| Eco Impact | Reusable | 500yr waste | 500yr waste | Reusable |
| Comfort | Like underwear | Can feel bulky | Internal dryness | Can feel pressure |
| Cost/Year | $50-100 | $150-300 | $150-300 | $30-40 (one-time) |
ProFlow™ Heavy Flow absorbs up to 50ml, equivalent to 4-5 regular tampons. This provides 8-12 hours of protection for heavy flow days, overnight use, or postpartum recovery. The 4-layer core wicks moisture instantly, locks it in the microfiber layer, and the waterproof TPU barrier prevents any leaks.
Yes, ProFlow™ is designed as a complete replacement for disposable pads and tampons. The 4-layer leakproof core provides full gusset coverage with a waterproof seal, making it a standalone solution for menstrual protection. Many users switch entirely to period underwear after trying ProFlow™.
Rinse in cold water immediately after use (optional but extends life), then machine wash cold with mild detergent. Do not use fabric softener or bleach as these coat the fibers and reduce absorbency. Hang dry or line dry. Tumble drying is not recommended. With proper care, ProFlow™ maintains absorbency for 200+ washes (2+ years lifespan).
No. ProFlow™ features silver-ion antimicrobial treatment that prevents bacterial growth and odor for 8-10 hours of wear. The organic cotton inner layer is breathable and naturally resistant to the bacteria that cause menstrual odor. Users report feeling fresh and confident even after 12 hours of wear.
Minimum Order Quantity (MOQ) is 300 pieces per style/color. Samples are available (3-5 pieces) for quality evaluation. Production lead time is 25-35 days depending on order size and customization. We respond to all wholesale inquiries within 24 hours. OEM/ODM services available for private labeling and custom designs.
Shanhao is certified with ISO9001 (Quality Management), BSCI (Ethical Labor Standards), GOTS (Global Organic Textile Standard), and OEKO-TEX Standard 100 (Safe for baby skin). We have 10+ years of manufacturing experience and supply major retailers worldwide. All certifications are available for verification upon request.
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