Shanhao Undies | Certified Period Underwear Manufacturer
  • Home
  • OEM Product
    • Period Panties
      • Hipster
      • Bikini Brief
      • High Waist
      • Mid Waist
      • Thong
      • Boxer Short
      • Sleep Overnight
    • Women Ordinary Panties
    • Women’s Bras
    • Period Swimwear
    • Maternity Bra & Panties
    • Women Incontinence Underwear
    • Men Incontinence Underwear
    • Menstrual Pads
    • Dance Underwear
    • Sleepwear
    • Sportswears
    • WetBags
  • For Wholesale
    • Light Flow Panties
    • Medium Flow Panties
    • Heavy Flow Panties
    • Normal Panties
  • Ship From USA
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0
  • Home
  • OEM Product
    • Period Panties
      • Hipster
      • Bikini Brief
      • High Waist
      • Mid Waist
      • Thong
      • Boxer Short
      • Sleep Overnight
    • Women Ordinary Panties
    • Women’s Bras
    • Period Swimwear
    • Maternity Bra & Panties
    • Women Incontinence Underwear
    • Men Incontinence Underwear
    • Menstrual Pads
    • Dance Underwear
    • Sleepwear
    • Sportswears
    • WetBags
  • For Wholesale
    • Light Flow Panties
    • Medium Flow Panties
    • Heavy Flow Panties
    • Normal Panties
  • Ship From USA
  • About Us
    • Team members
    • F.A.Qs
    • Gallery
    • Product Inquiry Form
  • Blog
  • Contact Us

Author: Nazim Shanhao

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From Plastic to Fabric: How Polyester Touches Our Skin

Polyester is a plastic-based polymer. It can be processed into soft polyester fabric, but chemically it remains plastic—meaning plastic in clothing and […]

7 Hidden Benefits of Period Panties Nobody Talks About
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7 Hidden Benefits of Period Panties Nobody Talks About

Period panties are no longer just leakproof underwear. They have evolved into a reusable, sustainable, and health-focused menstrual care solution trusted by […]

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Common Special Fabric Treatments: What They Are & Why They Matter

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TPU vs PU Leakproof Layers: What’s the Difference and Will They Melt in the Dryer?
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TPU vs PU Leakproof Layers: What’s the Difference and Will They Melt in the Dryer?

Leakproof fabrics are widely used in period underwear, activewear, swimwear, and reusable hygiene products. At the core of these fabrics are waterproof […]

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If you’ve ever wondered why some swimsuits last longer, feel softer, or keep their colors brighter, the secret is in the fabric […]

How a Wetbag Achieves Complete Waterproofing
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How a Wetbag Achieves Complete Waterproofing

A wetbag may look like a simple accessory, but its smart design delivers powerful waterproofing and odor-control benefits. Whether you use a […]

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Difference Between Woven Seamless and Bonded Seamless Panties: Complete Guide for Brands & Buyer

If you work in the lingerie, activewear, or underwear industry, you’ve probably heard of woven seamless panties and bonded seamless panties. Both […]

Advantages and Disadvantages of Pure Natural Fabrics
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What Are Pure Natural Fabrics? Advantages and Disadvantages of Pure Natural Fabrics

What Are Pure Natural Fabrics? Advantages and Disadvantages of Pure Natural Fabrics Choosing the right clothing, especially intimate wear like period underwear, […]

quick dry fabric
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How to Choose Fabrics for Incontinence Underwear and Period Underwear

  Looking for the best period underwear fabrics or incontinence underwear materials? This guide breaks down the core fabric requirements and the […]

Different Styles of Women’s Underwear
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A Comprehensive Guide to Different Styles of Women’s Underwear

When it comes to women’s lingerie, understanding the different types of panties is essential for comfort, style, and functionality. With so many […]

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Shanhao Knitting

Shantou Shanhao Knitting Co., Ltd. is a factory in Shantou City with its sales department in Shenzhen. We specialise in reusable leakproof period underwear, incontinence wear and maternity garments, producing 300,000 panties and 200,000 bras every month for brands across Europe, Australia, the Americas and South Africa.

Products

  • Women Period Panties
  • Women Incontinence Underwear
  • Men Incontinence Underwear
  • Maternity Bra & Panties
  • Period Swimwear
  • Menstrual Pads
  • Dance Underwear
  • Wet Bags

Company

  • About Us
  • Team Members
  • F.A.Qs
  • Gallery
  • Ship From USA
  • Blog
  • Product Inquiry Form
  • Contact Us
  • Privacy Policy

Contact Us

  • Phone / WhatsApp+86 181 2512 1337
  • Emailrose@shanhaoundies.com
  • Sales officeB1105, ZhanTao Technology Building, Longhua District, Shenzhen, Guangdong, P.R. China
  • FactoryXianbohuan East Road, Gurao Town, Chaoyang District, Shantou City, Guangdong, P.R. China

Copyright © 2026 Shantou Shanhao Knitting Co., Ltd. All rights reserved.

ISO 9001OEKO-TEX 100GOTSBSCIGRS

Flow Guide

Choose your flow type based on the number of pads, tampons or cups you use in approx. 12 hours.

1pad
Light
3pads
Medium
4pads
Heavy
5pads
Super Heavy
1tampon
Light
4tampons
Medium
5tampons
Heavy
7tampons
Super Heavy
½cup
Light
1cup
Medium
2cups
Heavy
2½cups
Super Heavy

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.

Size Chart

Find your true-to-size fit:

SizeUSUKEUHip (cm)Waist (cm)
XS4–68–1036–3888–9266–70
S6–810–1238–4092–9670–74
M8–1012–1440–4296–10074–78
L10–1214–1642–44100–10478–82
XL12–1416–1844–46104–11082–88
2XL14–1618–2046–48110–11688–94
3XL16–1820–2248–50116–12294–100
4XL18–2022–2450–52122–128100–106

Swipe sideways for EU, hip and waist

How to measure your size

Waist

Wrap the tape around the narrowest part of your natural waistline.

Hip

Measure around the fullest part of your hips with feet together.

Fit tip

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.