A sleeping bag is one of must item to equip camping or backpacking. This kind of product is available in various design, size, and price from many different brands. The features it has would also vary. For backpacker or campers who go out on rainy or snowy climates, the one that you need is waterproof down sleeping bag. The waterproof feature is needed in order to provide maximum uses in damp area or winter conditions. This sleeping bag is needed to provide the extra warmth at night sleeping as well. As backpackers, you also need to consider some other factors as priority of sleeping bag choice. Other than having waterproof feature, you may need the one with suitable compression size and lightweight product.