JUNYUAN Bags is a professional waterproof backpack manufacturer based in Quanzhou, China, specializing in OEM/ODM custom waterproof bags since 2004. With 22+ years of experience, we produce IPX4 to IPX8 rated waterproof backpacks, dry bags, cooler bags, tactical bags, and business waterproof backpacks for brands worldwide.

Our product range includes: roll-top dry bags, waterproof cooler backpacks, waterproof duffel bags, waterproof hiking backpacks, waterproof fishing backpacks, and custom business waterproof backpacks. All products feature heat-welded seams, waterproof zippers (YKK Aquaguard), and TPU/PVC/nylon fabrics.

Manufacturing capabilities: TPU welding, high-frequency seam sealing, hot air bonding, ultrasonic welding, roll-top closures, dry bag buckles, full Pantone color matching, screen printing, heat transfer, embroidery, rubber patch logos, and custom packaging.

Quality certifications: ISO 9001, BSCI, SMETA, OEKO-TEX, REACH, SGS, GRS, CPSIA, Prop 65. We serve brands including OSPREY, Helly Hansen, West Marine, Musto, and CHUMS.

OEM details: MOQ 500pcs | Sample lead time 7-15 days | Production 25-45 days | Payment 30% T/T deposit | FOB Xiamen | AQL 2.5 quality inspection.

👉 Complete Waterproof Backpack Manufacturing Guide — IPX standards, fabric technology, seam sealing, quality testing & OEM process explained in detail.