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China TPU welded waterproof backpack with airtight closure system Manufacturers, Suppliers, Factory

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  • 20L IPX6 TPU Waterproof Roll Top Backpack with Laptop Compartment

    20L IPX6 TPU Waterproof Roll Top Backpack with Laptop Compartment

    Sealock is a professional China Roll Top Closure Backpack manufacturer and supplier. The bag is equipped with two mesh bags and for shock resistance ipad layer , as well as a zipper pocket.
  • Lightweight Waterproof Daypack

    Lightweight Waterproof Daypack

    A masterclass in modern functional design, this 25L Urban Minimalist Waterproof Daypack is engineered for the fast-paced commuter and weekend explorer. Moving away from heavy, rigid traditional dry bags, it features a technical Ripstop TPU Laminated Nylon (210D/420D line) that balances extreme lightness with advanced weather resistance. Equipped with a PU-coated waterproof zipper, this pack offers sleek, streamlined protection against heavy rain and splashes without the bulky aesthetics of military gear. It is your ultimate all-weather companion for city streets, cycling lanes, coastal travels, and everyday light outdoor adventures.
  • 20L / 28L Roll Top Waterproof Backpack with Front Waterproof Pocket

    20L / 28L Roll Top Waterproof Backpack with Front Waterproof Pocket

    Sealock supplies the 20L / 28L Roll Top Waterproof Backpack with Front Waterproof Pocket, a welded 500D PVC dry backpack rated IPX7 with a roll-top closure, a waterproof front zip pocket and a full comfort suspension — padded ergonomic straps, an adjustable chest strap and a waist belt over a breathable mesh back. Two sizes. OEM/ODM and wholesale from MOQ 300, FOB Guangdong.
  • Compact Waterproof Fishing Sling Bag with Airtight Zipper (SL-E868A)

    Compact Waterproof Fishing Sling Bag with Airtight Zipper (SL-E868A)

    Sealock supplies the Compact Waterproof Fishing Sling Bag with Airtight Zipper, model SL-E868A, a welded 840D TPU sling pack sealed by an airtight waterproof zipper with a T-grip pull, plus a front waterproof zip pocket, side ladder lash straps, D-rings, a patch panel and an internal mesh zip pocket. 23 × 15.5 × 45 cm. BSCI / ISO9001 / Sedex, MOQ 500, FOB Shenzhen.
  • Waterproof Kayak Backpack with Red 28liter

    Waterproof Kayak Backpack with Red 28liter

    Waterproof Kayak Backpack with Red 28liter, material 500D PVC, thickness 0.5MM, the whole bag is semi-circular design, there is a sunroof for storing mobile phones on the front side, you can use the mobile phone to keep dry, add a multi-function lock, lock the paddle board, right there is a deflated and inflatable device on the side, which can fill the bag with gas to the maximum extent, temporary life-saving protection, and carry one-piece EVA on the back to reduce the weight and heat during hiking. The 28-liter capacity can meet a day's play.
  • 25L Waterproof Backpack with Dual-Slider Airtight Zipper (IPX7)

    25L Waterproof Backpack with Dual-Slider Airtight Zipper (IPX7)

    Sealock supplies the 25L Waterproof Backpack with Dual-Slider Airtight Zipper, a welded daypack rated IPX7 that seals with a two-way airtight waterproof zipper across the curved top, plus a front waterproof zip pocket, lash webbing, side pockets, a channelled padded back and a sternum strap. Four colourways including marsh-grass and grey camo. OEM/ODM from MOQ 300, FOB Guangdong.
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  • ​Sealock Waterproof dry backpack for kayaking

    Sealock Waterproof dry backpack is waterproof and durable,made by 500D PVC waterproof material. Excellent material ensures its high quality. In the waterproof dry backpack, all these items and gears will be nice and dry from rain or water during floating, hiking, kayaking, canoeing, surfing, rafting, fishing, swimming and other outside water sports.

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    The best dry bag backpack is one with an opening wide enough to enable you to easily place and store all your essentials.

  • Private Label Dry Bags for Outdoor Equipment Brands

    Sealock is a private label dry bag manufacturer producing waterproof bags under outdoor brands' own labels, from factories in China and Vietnam. Private label is how an outdoor brand builds a product line without building a factory — the bag is manufactured to a proven construction and sold as the brand's own, with the brand's logo, packaging, and identity. This is what the model actually involves for an equipment brand: how it differs from OEM, what a brand controls, where the responsibility sits, and how a line gets to shelf.

  • Custom Dry Bags: Materials, Sizes and Branding Options

    Sealock is a custom dry bag manufacturer producing OEM and private-label waterproof bags for outdoor brands, retailers, and promotional buyers. A custom dry bag is defined by three decisions — the material it is built from, the size it is cut to, and how a brand's identity is applied to it — and getting each right is what turns a generic bag into a product that fits a market and survives real use. This walks through every one of those choices, with the practical details buyers most often get wrong.

  • Custom Waterproof Backpacks for Outdoor Brands

    Sealock builds custom waterproof backpacks for outdoor brands, importers, and private label programmes — packs designed around a brand's market rather than pulled from a catalogue. A custom waterproof backpack is worth the investment only if it does something a generic pack does not: fit a defined customer, solve a real problem, and carry the brand's identity. This is how an outdoor brand turns customization into a product that actually differentiates, from defining the buyer to locking the specification.

  • Sealock Large Waterproof Backpack from Vietnam Supplier

    Sealock large waterproof backpack is made of durable 500D high-strength PVC mesh fabric, it effectively prevents branches and stones from scratching the packaging. Durable to puncture and tear, all seams are reinforced with hot welding to adapt to long-term use of hiking packages .

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