You need to know where you are and where you are going. Without a surefire way to determine your direction of travel, especially if you are bugging out at night, you are going to have issues. Not everyone has the money to purchase a milspec military compass. This compass is a lightweight, and inexpensive way to ensure that you have all of your various bugout bags, and E&E kits with a compass in them. Carabiner clip with liquid-filled compass Clips securely to back packs, clothing, key chains, zipper pulls and more Waterproof Dimensions: 2.75 x 1.25 x 3/8 Weight: .3 oz.