Pannier Rain Cover Tip

[laney]

The biggest downfall of the massive Tern panniers for me has always been the weather resistance. I've been able to mostly solve this problem with backpacking pack rain covers.
Turned sideways these have greatly improved the dryness of my gear inside. If you're in the market for something similar, I recommend the type with a drawstring cinch to keep the excess material out of your rear wheel. (non-cinch also works, it's just a bit finicky to position) There's two different Osprey covers in these photos but I think just about any brand would work.