AIR BELT AND AIR BELT DEVICE

An air belt having mesh webbing sufficiently strong and sufficiently expandable in the circumferential direction of a bag-shaped belt and an air belt apparatus including the air belt are provided. An air belt 10 includes a folded member being a bag-shaped belt 21 folded in a band shape and mesh webbing 22 covering the folded member of the bag-shaped belt 21. The mesh webbing 22 hardly expands in the longitudinal direction of the air belt 10, and is flexibly expandable in the circumferential direction of the bag-shaped belt 21. The mesh webbing 22 is made of a raschel-knitted material 30. The knitted material 30 is arranged such that the extending direction of knot portions 36 of yarn threads 31 and 31 corresponds to the longitudinal direction of the air belt 10.