Envelope Sleeping Bags
Envelope sleeping bags are a type of sleeping bag that features a rectangular shape with a full-length zipper on one side. These bags are typically roomier than mummy sleeping bags, allowing for more movement and comfort while sleeping. The rectangular shape also allows for the bag to be fully unzipped and used as a blanket if desired. This style of sleeping bag is popular for camping and backpacking due to its versatility and ease of use.