For Arkel GT54 bags - comes as a Pair

To keep your Arkel bag and gear dry, rain covers are an indispensable accessory. These covers are made out of ultra light 1.9 oz Silicon Coated Ripstop Nylon, so they are feather light and don't take up much room. An elasticized drawstring allows them to be adjusted to fit the load and a piece of stretch micro mesh fabric at the bottom allows any water that gets inside to drain. Besides keeping your bag dry, rain covers also help keep them clean.