IMPERVIUS Backpack

How to Choose a Waterproof Backpack

Waterproof backpacks use roll-top or airtight-zip closures. Roll-tops are simple and adjust to the load; airtight zips give fast access and a clean look for commuting. The harness should be attached through welded reinforcing patches so no stitches pass through the waterproof shell. For size: 15 to 25 litres for commuting and day trips, 25 to 35 litres for longer days, 40 to 60 litres for overnight and kayak camping.

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 backpacks?

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 backpacks 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: Backpack capacity guide  |  How harnesses are attached  |  Waterproof backpack materials