Life belt

A life belt comprising an annular inflatable tubular body, means for releasably fastening said tubular body around the waist of a person, said means being releasable when said tubular body is inflated for use, a capsule containing therein compressed gas for inflating said tubular body, and an actuator for releasing the compressed gas into said tubular body to thereby inflate said tubular body, wherein said tubular body is made of two symmetrically extending sheet members, said sheet members each having a first longitudinal sheet portion and second sheet portions at the ends of said first sheet portion, said second sheet portions being inclined downwardly at about 120.degree.-160.degree. relative to the longitudinal direction of said first portion, said sheet members being sealed together at their circumference to form a life belt base in a symmetrical structure with a gas chamber formed therein, said life belt base being folded at its middle portion and connected at its ends together to thereby form an annular shape, strips being provided on the second sheet members and adjacent to said ends of said life belt base, thereby maintaining said second portions in a closely contacted manner to each other when said life belt is inflated.