Winfung.com | Professional Customized Waterproof Bag Manufacturer

About Winfung

A professional bag factory in China with over 30+ years of experience. Since 1990, we've been committed to innovation, quality, and reliability in every waterproof bag we manufacture.

Trusted by Global Brands

Winfung is proud to be one of the DISNEY suppliers for over 10 years, serving both the US and European markets. We provide full-service support from sample development to shipping and exporting.

Our factory has passed multiple international audits, ensuring compliance with the highest standards in production, safety, and sustainability. We work with FAMA-certified supply chains for all materials and accessories.

30+

Years of Experience

180+

Countries Served

40+

R&D Team Members

60+

Application Scenarios Solved

Our Services

From concept to delivery, we provide a complete one-stop solution for custom waterproof bag manufacturing.

Custom Design

Our team of 30+ designers offers full design support, lab testing, and in-house prototyping to ensure your vision becomes reality.

High-Quality Assurance

Guaranteed price, quality, and delivery time. Strong process management and complete ERP system ensure consistent excellence.

Fast Delivery

Shorter production lead time with flexible capacity. We are positive and responsive to fulfill customer demands on time.

One-Stop Service

From raw materials to finished products, we manage everything in-house across our 23,000 sqm facility with dedicated waterproof and nylon workshops.

Our Products

Explore our wide range of waterproof bags designed for outdoor, urban, and specialized applications. All products are customizable for OEM & ODM.

Waterproof Dry Bag

Large capacity, roll-top closure, ideal for hiking, kayaking, and travel. Made from durable PVC-free nylon.

Customizable | OEM/ODM

Waterproof Bike Bag

New design with Klickfix mounting system. Secure handlebar or frame attachment for urban and off-road cyclists.

Mount-Compatible | Reflective

Waterproof Cooler Backpack

Custom print pattern with RPET 900D TPU backing. Keeps contents cold and dry for extended outdoor use.

Eco-Friendly | Insulated

Lightweight Waterproof Backpack

Durable, weather-resistant design with ergonomic straps. Ideal for daily commutes and outdoor adventures.

Ergonomic | Multi-Compartment

Outdoor Hiking Backpack

PVC-free nylon, large capacity, multi-functional design for camping, trekking, and travel.

Adventure-Ready | Durable

Urban Backpack

Sleek, modern design for city professionals. Water-resistant fabric with laptop compartment and anti-theft features.

Professional | Secure

Waterproof Duffle Bag

Large capacity with reflective logo. Perfect for gym, travel, or weekend trips. Heavy-duty zippers and handles.

Travel-Ready | Reflective

Messenger & Other Bags

Customizable messenger, sling, and crossbody bags. Ideal for urban mobility and promotional use.

Versatile | Brandable

View All Products on Official Site

Frequently Asked Questions

What can Winfung support customers to achieve their new development once we receive the design?

We can produce different kinds of DIY waterproof bags for customers, for example: Lightweight waterproof backpack, waterproof bicycle bags, waterproof dry bag, waterproof pouch and waterproof duffel bags. Once we have customers’ design, we normally start to make a paper pattern first to evaluate the size and construction for customer’s view. It can save time and cost to help customers to review their design for shell body. In this way, our valuable customers can enjoy a review of approximate shell body without making a real sample free of charge. After further discussion, we will start a stitching sample or molding set-up to make a sample once confirmed by customers flexibly. As a professional bag factory, what I want to say is that our configuration is comprehensive, because we have our own sewing sample room and waterproof bag sample room in same building. To choose us to start your new development of waterproof bag, you will get a good and quick service.

Posted: Nov 16, 2023

Are you one of the DISNEY suppliers?

Winfung is proud to be one of the DISNEY suppliers for over 10 years and has established long-term relationship with DISNEY for both the US and Europe market. We offer sample development, fabric and accessories physical testing, production, shipping and exporting for customers. Furthermore, to be their supplier, we also need to have a clear strong supplier chains who are having FAMA certificates at the same time for materials and accessories.

Posted: Nov 17, 2023

Do you pass any factory audit?

Yes, of course. Passing factory audits plays an important role for customers to evaluate a potential supplier’s reliability and capabilities. We have successfully passed multiple international compliance and quality audits, ensuring full transparency and adherence to global standards.

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Professional Customized Waterproof Bag Manufacturer