Shanhao Undies | Certified Period Underwear Manufacturer
  • Home
  • OEM Product
    • Period Panties
      • Hipster
      • Bikini Brief
      • High 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
    • Available Goods
    • 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
0
  • Home
  • OEM Product
    • Period Panties
      • Hipster
      • Bikini Brief
      • High 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
    • Available Goods
    • 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

Month: June 2026

Seamless design
2026-06-112026-07-24Product, Textile Fabric

How High-Quality Seamless Bonded Period Panties Are Made

When it comes to premium period underwear, quality and reliability are non-negotiable. High-quality seamless bonded period panties are not simply stitched together; […]

https://shanhaoundies.com/product-category/period-panties/
2026-06-022026-07-27Testimonials

Precision Makes the Difference in Seamless Laser Cut Panties

https://shanhaoundies.com/wp-content/uploads/2026/06/seamless-laser-cut-panties-video.webm Seamless laser-cut panties  represent one of the most advanced innovations in modern intimate apparel. Unlike traditional garments sewn with visible stitches […]

certified period underwear suppliers
2026-06-022026-07-24Textile Fabric

The Future of Textile Dyeing Isn’t Liquid. It’s Supercritical

While the apparel industry constantly talks about sustainability, true decarbonization requires a fundamental rewrite of traditional manufacturing. The image below captures what […]

Super Absorbent Fabric
2026-06-012026-07-27Product, Textile Fabric

Shanhao Super Absorbent Fabric | 25x More Absorbent Than Terry Fabric

The period underwear industry is evolving rapidly, and one of the biggest challenges has always been balancing high absorbency, leak protection, comfort, […]

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 500,000 panties and 100,000 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

Contact Us

  • Phone / WhatsApp+86 181 2512 1337
  • Emailrose@shanhaoundies.com
  • Sales officeA601, 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

Shanhao ProFlow Heavy Flow Period Underwear — 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.