If you love to go on camping, you will need a down sleeping bag to be brought along your camping. To meet this purpose, you can choose down sleeping bag product from REI. This product can be used as travel bag, fair weather bag, or even liner inside another bag. By using this sleeping bag, you will be able to boost warmth even on the very cold nights during camping. REI sleeping bag is also light and packable. Another advantage is that it is water resistant and excels in wet condition. So, you do not have to worry to go camping in wet area. This item uses durable material as well.