Waterproof Bicycle Bags with High Frequency Welded Seams
TPU laminated nylon welded rather than sewn, so there are no needle holes.
Every Waterproof Bag Product

Bicycle Waterproof Tail Bag 840D Nylon with Welded Seams
High-frequency welded 840D nylon that is sealed rather than water resistant
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Waterproof Frame Cross Bag in Two Sizes
600D nylon welded shut in a 125 gram and a 90 gram size
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Waterproof Triangle Frame Bag with Graded Fabrics
600D outside 420D inside 840D on the bottom where it matters
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Waterproof Bike Pannier 27 L with Quick Release Clip System
27 litres on a clip system that attaches and detaches in seconds
View specificationWhat This Category Is For
These four bags are built on a different principle from the sewn range. Nylon in 420D to 840D is laminated to a TPU waterproof membrane, a PP board keeps the shape, and the seams are high-frequency welded rather than stitched. The waterproof triangle bag goes further and uses three different fabric weights, putting 840D on the bottom where wear happens.
The Problem It Solves
A sewn seam has a needle hole every few millimetres. Coating the fabric does not fix that. Welding fuses the panels together, which is the only way a fabric bag is actually waterproof.
- Bikepackers and tourers
- All-weather commuters
- Brands that want to make a real waterproof claim
Industries We Supply From This Category
Guides for This Category
Why a Sewn Bike Bag Is Not Waterproof and a Welded One Is
Every stitch in a seam is a hole. High frequency welding removes them. Here is how to tell the two...
Read the guideDenier Explained 210D 420D 600D and 840D in Bike Luggage
Four numbers cover almost all bicycle luggage fabric. Here is what each one is for and why a good bag uses...
Read the guideWaterproof Bag Questions
What does high frequency welding do?
Why does the triangle bag use three fabrics?
Are the zips waterproof too?
Which is the most hard-wearing?
Quote the Waterproof Bag Range
Send the models and quantities you need. Customised logo is accepted across the range.