China RF welded cooler bag Manufacturer, Supplier, Factory

For over 20 years, SEALOCK COOLER has been dedicated to developing and producing high-quality Insulated Large Lunch Bags. We maintain long-term partnerships with international brands such as Stanley, Osprey, Musto, Simms, and Hydro Flask, earning a strong reputation through solid craftsmanship and reliable quality.
We have built three factories equipped with advanced high-frequency welding equipment. The sample development and main fabrics are completed domestically, and customers can freely choose factories in China or Vietnam for mass production. The factories in these two places are proficient in both full welding and sewing processes, and the quality is equally excellent. It is worth mentioning that choosing a Vietnamese factory can also help European and American customers save a lot of tariffs, making it more cost-effective.

For many years, SEALOCK COOLER has been dedicated to the research and production of soft sided cooler tote bag, maintaining long-term partnerships with international brands such as Stanley and Hydro Flask, which is a full recognition of our technology and quality.We have a complete production layout: sample development and major fabric procurement are completed domestically, and customers can choose to place orders at factories in China or Vietnam according to their needs. Both factories are proficient in both welding and sewing processes, and can flexibly meet the production requirements of different products. It is worth mentioning that choosing a Vietnamese factory can also help European and American customers save considerable tariff costs, making procurement more cost-effective.

Sealock is a professional manufacturer and supplier of fish coolers and other outdoor soft coolers in China. Our Insulted Fish cooler bag are equipped with a thick insulation layer and a tight sealing process, with a thickness of up to 20mm, ensuring that fish can stay fresh for one to two days. The fabric of the fish cooler is waterproof and scratch-resistant, and the seams are reinforced using professional welded technology. Whether it's the bumps on the boat or the gravel on the shore, it is very sturdy, allowing you to enjoy every fishing trip with peace of mind. In terms of detail design, this fish cooler is indeed well-considered: the reinforced flat bottom is very stable on the boat, without fear of rocking back and forth; there is also a drainage port on the side, which can drain melted ice water at any time, keeping the interior clean and refreshing; the fish cooler is also equipped with classification mesh bags, which can be used to clearly and conveniently organize fish bait and small tools. This bag comes in 3 sizes to choose from, allowing you to select the size you need according to your requirements.

For 21 years, SEALOCK COOLER, a professional manufacturer of Outdoor Soft Insulated Cooler Backpacks, has been committed to this field. Our products have undergone long-term market testing, offering both reliable performance and competitive pricing. Today, our large fish bags enjoy a strong reputation in European and American markets. We sincerely hope to establish a long-term cooperative relationship with you in China and become your trusted partner.

For over twenty years, SEALOCK COOLER, a professional manufacturer, has focused on perfecting the Outdoor Backpack Cooler Bag, delivering excellent performance without increasing costs. Our factories are located in Guangdong, China and Vietnam. Our bags are highly trusted by users in Europe and North America, proving their durability in daily use. We look forward to establishing a long-term partnership in China and becoming your reliable source for practical cooling solutions.

Engineered for rugged marine environments, our Waterproof Soft Cooler Tote with Leakproof Zipper for Fishing & Outdoor Adventures features advanced 100% RF-welded TPU and an IPX8 airtight zipper, delivering 48–72 hours of ice retention. Backed by robust factory R&D, high-capacity production, and massive inventory, this premium marine cooler bag supports fast OEM/ODM customization. It is trusted globally by professional offshore anglers and top outdoor brands for proven market turnover and heavy-duty durability.