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China leakproof cooler bag Manufacturer, Supplier, Factory

We insist on offering high-quality output with superior small business concept, honest profits along with the best and fast service. it will bring you not only the top quality product and huge profit, but one of the most significant will be to occupy the endless market for leakproof cooler bag, waterproof soft cooler, TPU soft cooler tote, insulated fishing cooler, marine soft cooler, We often hold the philosophy of win-win, and establish long-term cooperation connection with consumers from around the planet.We think that our expansion base on customer's achievement, credit rating is our daily life.
leakproof cooler bag, We've got been perfectly devoted to the design, R&D, manufacture, sale and service of hair products during 10 years of development. We now have introduced and are making full use of internationally advanced technology and equipment, with advantages of skilled workers. "Dedicated to providing reliable customer service" is our aim. We've been sincerely looking forward to establishing business relationships with friends from at home and abroad.

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  • Zip Top Waterproof Soft Cooler

    Zip Top Waterproof Soft Cooler

    For over 20 years, SEALOCK COOLER has been dedicated to the research and production of high-performance zip top waterproof soft cooler. We maintain long-term and stable cooperative relationships with internationally renowned brands such as Stanley and Hydro Flask, and have won market recognition with solid manufacturing processes. We are equipped with three professional high-frequency welding factories, and sample development and major fabric procurement are all completed domestically. Customers can freely choose factories in China or Vietnam for production according to their needs. Both production bases are proficient in full welding and sewing processes, and it is worth mentioning that choosing a Vietnamese factory can also help European and American customers save considerable tariff costs.
  • Cooler Backpack Insulated Leakproof

    Cooler Backpack Insulated Leakproof

    SEALOCK COOLER has specialized in manufacturing Cooler Backpack Insulated Leakproof for over 20 years, with production bases covering 20,000㎡ in China and Vietnam and over 1,000 employees. Our products are sold in 80+ countries, serving 3,000+ customers and maintaining long-term partnerships with many distributors. As a leading picnic cooler bag manufacturer in China, SEALOCK COOLER follows strict factory inspection standards to ensure consistent product quality.
  • Waterproof Soft Cooler Bag 15L–20L TPU Insulated Ice Chest with Airtight Zipper

    Waterproof Soft Cooler Bag 15L–20L TPU Insulated Ice Chest with Airtight Zipper

    Sealock supplies the Wide-Mouth Waterproof Soft Cooler Bag 15L–20L TPU Insulated Ice Chest with Airtight Zipper, a leakproof soft cooler in 840D TPU with a food-grade airtight TPU liner, high-frequency welded seams and an airtight waterproof zipper. The full flip-top opening loads ice, bottles and lunch boxes fast; it holds ice 48+ hours and comes in 12L, 15L and 20L. OEM/ODM and full custom from MOQ 300, FOB Guangdong.
  • Insulated Leakproof Waterproof Cooler Bag

    Insulated Leakproof Waterproof Cooler Bag

    SEALOCK COOLER is a professional high-quality Insulated Leakproof Waterproof Cooler Bag manufacturer with factories in China and Vietnam. Our factories have passed multiple authoritative certifications such as SMETA, HIGG, SCAN, GRS, BSCI, and ISO9001, and strictly adhere to standards in quality control and social responsibility. I hope to become your partner in China
  • Outdoor Cooler Backpack

    Outdoor Cooler Backpack

    For over 20 years, SEALOCK COOLER has focused on Outdoor Cooler Backpacks, operating modern factories in China and Vietnam totaling 20,000㎡ with 1,000+ employees. Our products reach 80+ countries, serving 3,000+ customers and maintaining long-term partnerships with many distributors.
  • Leakproof Waterproof Insulated Cooler Bag

    Leakproof Waterproof Insulated Cooler Bag

    We have been focusing on the research and manufacturing of leakproof waterproof insulated cooler bags for more than 20 years. SEALOCK COOLER has production bases in both China and Vietnam, equipped with professional welding equipment, and customers can freely choose their production locations. It is worth mentioning that choosing a Vietnamese factory can also help European and American customers save considerable tariff expenses.
  • Related Blog
  • Reviews

  • How should you choose the capacity of a camping ice pack bag?

    The key to choosing the capacity of a camping ice pack is to match the number of travelers, the amount of food, and the duration of use. Prioritize slightly larger packs over smaller ones.

  • Soft Cooler Quality Inspection Before Shipment

    A pre-shipment inspection is the last point at which a problem costs hundreds of dollars instead of an entire container. It is also the step most buyers under-specify — booking an inspection, accepting whatever default settings the agency proposes, and receiving a report they cannot really interpret. This guide covers how AQL sampling actually works, how to define defects for a soft cooler specifically, and the product-specific checks that a generic consumer-goods inspection will miss entirely. Sealock (YiFuLong Outdoor Gear Co., Ltd.) runs its own outgoing inspection and welcomes third-party inspection on every order.

  • Custom Cooler Backpacks for Outdoor Brands

    Sealock manufactures the custom cooler backpacks for outdoor brands that OEM and private-label buyers develop into signature products, not just logo drops. An outdoor brand adding a cooler backpack to a performance line is not buying a blank bag to stamp — it is buying a spec that has to live up to the brand's reputation for cold-hold, waterproofing and durability, and a supplier that can prove those numbers.

  • How Long Does a Soft Cooler Backpack Keep Ice? Field Tested

    This field test report on the ice retention performance of 25–30L closed-cell insulated soft coolers debunks the exaggerated 72-hour official marketing claim. By analyzing ambient temperatures ranging from 75°F to 110°F, ice-to-storage volume ratios, and performance differences between solid block ice and crushed ice, we deliver a practical 24–60 hour selection and packing guide for day trippers, overnight campers and sea anglers, enabling buyers to make quick cold storage decisions in just three seconds.

  • Custom Soft Cooler Backpacks: Materials, Sizes & Branding Options

    Once a brand decides to develop its own cooler backpack, three practical decisions shape the product more than any other: what it is made of, how big it is, and how the brand appears on it. Each looks simple and each hides a trap — a shell material that cracks in the field, a capacity that misreads the use case, or a logo method that literally punctures the waterproofing.

  • Large Cooler Tote Bag for Family Outings

    Sealock manufactures the large cooler tote bag for family outings that wholesale buyers source when one bag has to feed the whole group. A family day out is a different job from a quick grocery run: more mouths, more drinks, more hours in the sun, and a long carry from the car to the picnic table.

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