When you purchase a camera backpack that is made out of a waterproof material, you will not have to worry about rain damage. You can take the backpack and travel wherever you want to go. The backpack would provide utmost protection to your belongings at all times. This kind of a backpack can also keep you away from the hassle of using a rain cover. If you want to purchase this kind of a waterproof backpack, Vanguard Alta Sky 45D is the perfect option available for purchase.