Why Organic Cotton Is the New Standard for Period Wear (Complete 2026 Guide)
The demand for organic cotton period underwear is growing rapidly as consumers shift toward safer, PFAS-free, and eco-friendly menstrual products. Today’s buyers […]
The demand for organic cotton period underwear is growing rapidly as consumers shift toward safer, PFAS-free, and eco-friendly menstrual products. Today’s buyers […]
Unlike traditional stitched underwear, Shanhao seamless period panties are engineered for durability, convenience, and long-term performance even under high heat conditions. Our […]
When it comes to thong underwear, comfort and invisibility are everything. A good thong should stay in place, feel smooth against the […]
Switching to period underwear is a smart step toward comfort, sustainability, and convenience. One of the most common questions is: How many […]
At Shanhao, packaging is more than protection.It’s part of the product experience. For period underwear brands, the right packaging must balance functionality, […]
Many disposable pads use plastic-based layers for absorbency and leak protection. Here’s why it happens, what it means for comfort and the […]
Polyester is a plastic-based polymer. It can be processed into soft polyester fabric, but chemically it remains plastic—meaning plastic in clothing and […]
Period panties are no longer just leakproof underwear. They have evolved into a reusable, sustainable, and health-focused menstrual care solution trusted by […]
Modern textiles are no longer judged only by color or softness. With advanced fabric finishing technologies, today’s functional fabrics can be waterproof, […]
Leakproof fabrics are widely used in period underwear, activewear, swimwear, and reusable hygiene products. At the core of these fabrics are waterproof […]
Choose your flow type based on the number of pads, tampons or cups you use in approx. 12 hours.
These are guide figures, not medical advice. Absorbency is measured under lab conditions and real-world results vary with fit and activity. If your flow soaks through in under two hours, speak to a healthcare professional.
Find your true-to-size fit:
| Size | US | UK | EU | Hip (cm) | Waist (cm) |
|---|---|---|---|---|---|
| XS | 4–6 | 8–10 | 36–38 | 88–92 | 66–70 |
| S | 6–8 | 10–12 | 38–40 | 92–96 | 70–74 |
| M | 8–10 | 12–14 | 40–42 | 96–100 | 74–78 |
| L | 10–12 | 14–16 | 42–44 | 100–104 | 78–82 |
| XL | 12–14 | 16–18 | 44–46 | 104–110 | 82–88 |
| 2XL | 14–16 | 18–20 | 46–48 | 110–116 | 88–94 |
| 3XL | 16–18 | 20–22 | 48–50 | 116–122 | 94–100 |
| 4XL | 18–20 | 22–24 | 50–52 | 122–128 | 100–106 |
Swipe sideways for EU, hip and waist
Wrap the tape around the narrowest part of your natural waistline.
Measure around the fullest part of your hips with feet together.
Between two sizes? Size up for a relaxed, overnight-ready fit.
Measurements are body measurements, not garment measurements. Tolerance is 1–2 cm on finished garments. For private-label orders we can build to your own size spec.