Founder
Meet Sunny Sun
Sunny Sun, Founder & CPO of LJUNDERWEAR
Sunny Sun did not build LJUNDERWEAR to produce another private label product. She built it to solve the problems women quietly live with and the problems brands cannot afford to ignore: leakage, discomfort, unsafe materials, unstable fit, and quality inconsistency.
As Founder and CPO, Sunny connects women's real-life period care needs with leak-protection engineering, PFAS-free material choices, low-MOQ sampling, and AQL-based quality control for global private label brands.
She saw mothers working through the night to check for leaks.
She heard young girls worry about their first period at school.
She understood the quiet loss of confidence caused by discomfort.
For Sunny, period underwear must earn trust after the first wear, not just look promising in a sample room.
The Moment
The Question That Started LJUNDERWEAR
Since 2015, Sunny's mother handed her a stained nightgown and asked a question she could not forget:
Why do women still have to choose between a good night's sleep and their dignity?
That moment stayed with her. Not as a product idea, but as a problem that had never truly been solved.
The Idea
A personal question sparked a mission to rethink period care.
The Beginning
Founded in Gurao with a vertically integrated production focus.
Quality System
Built quality checkpoints for materials, construction, fit, and final inspection.
Global Impact
Serving brands in 28 countries with trusted quality.
Engineering First
Designed Around Women's Real-Life Needs. Engineered For Brand Trust.
Every LJUNDERWEAR product begins with the real-life details that decide whether customers trust a brand: leakage, heat, discomfort, fit movement, material safety, and wash durability.
Leak-Protection Structure
Multi-layer gusset systems designed for real usage conditions.
Breathable Comfort
Materials selected to reduce heat, moisture, and discomfort.
PFAS-Free Chemistry
Safer choices aligned with global expectations.
Wash Durability
Performance maintained across repeated washing cycles.
Fit Stability
Tested for movement, coverage, and long-term wearability.
For Sunny, a successful product is not the one that only looks good in development. It is the one women trust when they actually wear it.
Sunny’s product philosophy is supported by LJUNDERWEAR’s established OEM/ODM workflow, quality systems, and manufacturing capabilities.
Explore Our Manufacturing Capabilities →
A Letter From Sunny
When I founded LJUNDERWEAR, I was thinking about women.
That is why I believe period underwear must combine both emotion and engineering. At LJUNDERWEAR, we do not simply manufacture products. We help brands deliver dignity through products customers trust, wear repeatedly, and return to buy again.
For our partners, that means responsible materials, thoughtful development, stable production, and transparent quality control.
Sunny Sun, Founder & CPO, LJUNDERWEAR
Build With LJUNDERWEAR
Build A Period-Care Line Customers Trust After The First Wear
Work with a female-led OEM/ODM partner that understands what can go wrong in period underwear and builds to prevent it before your brand pays the price.
Who is Sunny Sun?
Sunny Sun is the Founder and CPO of LJUNDERWEAR, leading product development around women's real period-care needs.
What does LJUNDERWEAR manufacture?
LJUNDERWEAR develops OEM/ODM period underwear, leak-protection underwear, and private label intimate apparel for global brands.
Why do brands choose LJUNDERWEARr instead of a standard underwear factory?
Because period underwear is not just sewing. Brands need leak-protection structure, safe material choices, fit stability, wash durability, low-MOQ sampling, and quality control that protects them from complaints, returns, and reputation damage.
