Convert to Quilt: With a zipper that opens fully, allowing the sleeping bag to be spread out and used as a blanket or quilt.
Sleeping Bag Combination: They can be combined with a second sleeping bag of the same type and model. For proper connection, one sleeping bag with a right zipper and one with a left zipper are required.
Left: It not only concerns the ability to connect with another sleeping bag but also ease of use. The zipper on the left side as you lie down is more convenient for right-handed people.