Eberlestock's Reversible Rain Cover is made of heavier-duty polyurethane-coated nylon than the light-weight version and is reversible with Universal Digital on one side and Orange on the other. Weighing 9 oz., the Rain Cover is designed to cover the entire pack and a weapon in it's scabbard or just the pack itself so you can pull your gun from the scabbard quickly. 

Eberlestock's Large Reversible Rain Cover is designed to fit the Dragonfly and Just-One packs.