Organic Cotton · 4-Layer Leakproof Tech · Machine Washable · 200+ Wears
| Quantity (pieces) | 1 – 200 | 201 – 1000 | > 1000 |
|---|---|---|---|
| Lead time (days) | 5 | 15 | To be negotiated |
Outer: 80%nylon, 20% spandex
Middle layer: 1 layer of TPU
Lining: 1 layer of absorbent cotton
A seamless, multi-size period brief designed to adapt to every body and deliver dependable protection. Choose
from flexible size ranges: Size (XS to 4XL).
Comfortable through bloating, post-birth changes, and everyday fluctuations in body size, Shanhaoo Undies
Stretch briefs flex and move with you. The contoured fit hugs in all the right places while the absorbent core helps
guard against leaks—without cutting in or digging.
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.
Shanhao ProFlow Heavy Flow Period Underwear — 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.
