We have plenty of customers asking us about waterproof pannier bags. While there are a number of bags on the market that do a good job of keeping your stuff from getting wet we haven’t come across any that are better than the Arkel Dolphin. It essentially acts as a dry bag similar to what you’d strap to the deck of your kayak but it is designed to fit on the side of your rear bike rack.
As the name implies it has a 32L capacity. We have red and black in stock and either costs $190.