The Intermediate Cold Weather sleeping bag is great for cold weather camping! It is designed with a “foot box” so that the user can keep their feet warmer by wearing boots or shoes inside the sleeping bag. It is rated -10° to 30° Fahrenheit, which makes it great for mid-cold weather activities and staying warm. It is 1 piece of the Modular Sleep System and is designed to fit inside the patrol sleeping bag. The sleeping bag is lightweight, weighing in at about 4 lbs. Combined with the other 2 pieces of the Modular Sleep System it can keep the wearer warm in sub-zero winter climates!