REI Duck's Back Rain Cover - 60 Liters - $24.50

With a waterproof polyurethane coating to keep out the rain, the REI Duck's Back 60 backpack cover lets the elements roll off your pack even if you're not a duck. Drawstring shockcord with toggle lock securely cinches around pack for a snug fit. Reinforced bottom prevents damage when setting pack on rough surfaces. Zippered storage pouch doubles as an accessory pocket to stash small essentials; offers a vertical strap for easy securing or belt clip for quick horizontal attachment. Cover has bottom drain hole for release of trapped moisture. Pouch dimensions: 6.5 x 3.75 x 2 in. - $24.50