What is sleeping bags?

A sleeping bag is an insulated covering used for providing warmth while sleeping outdoors, such as when going camping or backpacking. It is typically made from a synthetic or natural material, and is designed to retain body heat and protect against the cold. Sleeping bags come in various shapes, sizes, and temperature ratings to suit different climates and preferences. Some sleeping bags are also designed for specific activities, such as mountaineering or backpacking.