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Waterproof Bag
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Waterproof Bag
Our waterproof bags are built to keep water out, not just to shed a shower. Most are made from PVC tarpaulin or TPU-laminated fabric joined with high-frequency welded seams, so there are no stitch holes in the waterproof shell, and closed with roll-tops or airtight zippers. The range covers dry bags, waterproof backpacks, duffels, travel bags, waist packs, sling bags, totes and phone pouches. Sealock has made waterproof bags for over 20 years at its own factories in Dongguan, China and Ho Chi Minh City, Vietnam. Every model can be made in your colours, sizes and logo for OEM and ODM programmes.
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  • Model SL-F071. Dimensions 29 × 10 × 23 cm (11.4 × 3.9 × 9.1 in); approx. 6 L; approx. 0.7 kg; recommended load up to 4 kg. Body TPU-laminated nylon, tonal black camo print; high-frequency welded main compartment; sewn harness. YKK airtight zipper; IPX7 main compartment, verified by full water-immersion test 2+ hours. Front webbing strip with two D-rings; two pairs of rod-holder straps; padded sling strap; padded mesh back panel; padded waist wing with slip pocket; UTX buckles. Custom prints and colours. MOQ 300 pcs; samples 7–15 days; production 30–45 days. OEM/ODM including full custom. Origin Guangdong, China.

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  • SL-C876 water-repellent shoulder tote. 35 × 15 × 34 cm, approx. 15 L usable, 0.4 kg. PVC-coated fabric with textured surface finish, coated wipe-clean lining, sewn construction with X-box bar-tacked webbing handle anchors, tapered bucket profile, open top. Five stock colourways: blue, pink, beige-grey, purple, green; Pantone matching available. Water-repellent surface — rain, spills, and wipe-down; not sealed and not immersion rated. Sewn production line, Dongguan China or Ho Chi Minh City Vietnam. MOQ 300 pcs, logo by silkscreen, heat transfer, embossing, or woven label. Samples in 7–15 days, FOB Guangdong.

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  • Manual vacuum compression packing bag with a screw-type air valve and an included hand pump. Occupies the position between press-by-hand and battery-powered compression: full evacuation performance with no electronics, no charging cycle, and no lithium battery to declare or certify for air freight. High-frequency welded TPU body, full-length sealed waterproof zipper, welded transparent viewing window, and moulded grip tabs on both sides for holding the bag steady during evacuation. 48 × 29 × 10 cm, approx. 13.9 L, 0.18 kg, in white or black. Splash, dust, and damp resistant; not rated for submersion. MOQ 300 pcs FOB Guangdong, samples in 7–15 days.

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  • Vacuum compression packing bag with an integrated USB-C rechargeable electric pump — no separate pump unit to lose or forget, which is the single most common failure point in this category. High-frequency welded TPU body with a full-length sealed waterproof zipper, transparent viewing window, D-ring hanging loop, and bound edge finishing. Digital display shows compression countdown; screw-down waterproof cap seals the pump housing when not in use. 42 × 29 × 11 cm, approx. 13.4 L, 0.2 kg. Splash, dust, and damp resistant; not rated for submersion. MOQ 300 pcs FOB Guangdong, samples in 7–15 days. -->

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  • Reusable vacuum compression bag in high-frequency welded TPU with a full-length sealed waterproof zipper and a centre-mounted one-way valve. No pump or power required — hand pressure compresses, and the valve holds. Welded seams rather than heat-sealed film give the cycle life that cheap compression bags lack, and the sealed construction means the bag also functions as a dry bag for wet kit. Three sizes: 38 × 27 × 14 cm (14L), 46.5 × 31.5 × 14 cm (20L), 53.5 × 38.5 × 16 cm (33L), 150g each, black. Verified by 24-hour vacuum retention and air-leak determination. Nested retail sets, colour-coded sizing, and transparent panels available as ODM. MOQ 500 pcs, samples in 7–15 days.

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  • Welded TPU waterproof organiser with a formed box structure, full-length sealed zipper, and a transparent viewing window. Works as a travel dopp kit, tech pouch, field first aid kit, or dry storage inside a larger pack. 25 × 15.5 × 13.5 cm, 5.2L, 150g, IPX6. Four colourways including multicam for range and field channels. Solid branding panel suits large logos; nested size sets tool easily. OEM/ODM, MOQ 500 pcs, samples in 7–15 days.

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How to Choose a Waterproof Bag

Three details decide whether a bag is genuinely waterproof: the fabric, the seams and the closure. PVC tarpaulin and TPU-laminated fabrics keep water out on their own, but a bag is only as good as its weakest seam, so stitched seams in the waterproof shell need to be welded or sealed. Roll-top closures are simple and reliable when rolled at least three times; airtight zippers give quicker access and can be rated for immersion. Match the rating to the use: IPX5 or IPX6 for rain and spray, IPX7 or IPX8 for submersion.

For brands, the next decisions are size range, carry system and finish. We help buyers build a range that covers entry, mid and upgraded price points without duplicating models.

Every order passes through incoming material inspection (IQC), in-process checks during welding and sewing (IPQC) and final inspection (OQC), with SGS or QIMA third-party inspection available on request. Our test programme covers seam tensile and bonding strength, load testing of 1,500+ cycles, zipper testing to 3,000 cycles, salt spray on hardware, abrasion, and colour fastness and colour difference against the approved sample. Waterproof ratings are verified on the bag itself: a heavy rain and water-jet test for IPX5 and IPX6 models and a full water-immersion test of 2+ hours for IPX7 and IPX8 models.

Frequently Asked Questions

What is the MOQ for custom waterproof bags?

Usually 300 pieces per style; some models start at 200 or 500. Colours can often be split within one order.

How much do custom waterproof bags cost?

Price depends on the material, size, closure, features, logo method and order quantity. Send us your specification or a reference sample and target quantity, and we will quote.

Can you add our logo and brand colours?

Yes. Screen printing, heat transfer and welded patches are the most common methods, and we can match Pantone colours for the fabric, webbing and zip pulls.

How long do samples and production take?

Samples usually take 7–15 days and bulk production 30–45 days after sample approval, from our factories in China or Vietnam.

Related guides: Welded vs sewn construction  |  What each certification proves  |  Logo methods that survive water

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