The Intermediate Cold Weather sleeping bag is great for cold weather camping. It has a rating of -10° to 30° Fahrenheit. The user keeps their feet warmer by wearing boots or shoes, which easily fit in the bag’s “foot box”. You can easily fit this 1 piece Modular Sleep System inside the standard 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!