This is a sleeping system and a lounge partner. Use it in the tent, take it on a hike, make marshmallows by the campfire or catch a morning sunrise at the beach! The removable booties easily unzips so you can wear your own shoes without taking off the bag. The bag marries the warmth and comfort of a sleeping bag with the function and fun of a snowsuit. Exaggerated draft tubes stop heat loss around the zippers even as a thermal collar around the head and neck prevent drafts. Has zippered leg and the chest vents shed unwanted heat if you’re feeling too warm. Designed with elastic no-hassle hand openings to allow hands out and in of the bag effortlessly. Temperature rating 44° F.