Waterproof versus water-resistant

Unless otherwise noted, Gramm bags are not waterproof because they feature a sewn construction. Sewing enables innovative designs such as our Diamond Bag, and it is the only viable way to make custom Frame Bags. The trade-off is that stitched seams can leak small amounts of water, and we take steps in design and manufacturing to minimize this risk.

Our bags are highly resistant to water ingress due to the waterproof fabrics with DWR coatings and manufacturing techniques we employ. Seam taping, floating liners, generous radii that prevent capillary action, smart seam placement, and more minimize the chance of moisture reaching the inside.

In practice, this means our sewn bags resist showers and moderate rain for a while, which is plenty for most styles of riding. However, moisture may enter in a sustained downpour, and our bags cannot be submerged. To keep critical gear dry in all conditions, we recommend doubling up with a lightweight drybag. With these tradeoffs in mind, enjoy your classically sewn bag!