The Eberlestock "large" Reversible Rain Cover is tailor made to fit the Eberlestock J-34 backpack. In driving rain storms, it's impossible to keep the inside of your backpack dry without an honest rain cover. If you will be out for an extended trip in wet weather, or if you plan on bivvying your pack outside your tent, you will appreciate having a nice rain cover along. Features Unicam Digital camo on one side and Blaze Orange on the other. Weighs 9 ounces.