a band body;

a handgun pouch connected to said band body, wherein said handgun pouch has an accommodating compartment for holding a handgun; and

a clasp means which is capable of being operated between a closed state for retaining the handgun at said handgun pouch and an open state for allowing the handgun to be retrieved from said handgun pouch;

wherein said clasp means is coupled to said handgun pouch and is configured to allow a single drawing operation of a single hand of the user to release said clasp means and retrieve the handgun from said handgun pouch;

wherein said handgun pouch comprises an inner layer connected to said band body, and an outer layer connected to said inner layer to define said accommodating compartment with a top opening communicated to said accommodating compartment, wherein said clasp means comprises a first connecting strap connected to said inner layer of said handgun pouch, a second connecting strap connected to said outer layer of said handgun pouch, and a clasp assembly which comprises a first clasp element connected to said first connecting strap, and a second clasp element connected to said second connecting strap, wherein said first clasp element is detachably coupled with said second clasp element for retaining the handgun at said accommodating compartment in said closed state and allows the handgun to be retrieved out through said top opening of said handgun pouch by the single drawing operation;

wherein said first clasp element is a button which is mounted to an upper free end portion of said first connecting strap, wherein said second clasp element is a buttonhole member which is mounted to an upper free end portion of said second connecting strap;

wherein when said clasp assembly is in the closed state for retaining the handgun at said accommodating compartment, a gap is defined between said upper free end portion of said first connecting strap and said upper free end portion of said second connecting strap, so as to allow a thumb of the hand of the user to slide into the gap to cause said clasp assembly to be released during the single drawing operation;

wherein said second connecting strap is an elastic strap, wherein said first connecting strap is in an upright state when said clasp assembly is in the open state;

wherein said first connecting strap is mounted to an inner surface of said inner layer of said handgun pouch, wherein said second connecting strap is mounted to an outer side of said outer layer of said handgun pouch;

wherein said button comprises a button seat which is embedded into said upper free end portion of said first connecting strap, and a button pin which is protruded from said button seat, wherein said button pin comprises an enlarged head portion and a circular clasping groove adjacent to said enlarged head portion, wherein said buttonhole member comprises a mounting strap which is folded to provide two strap layers which are clamping said upper free end portion of said first connecting strap to form a sandwich structure, a base plate attached to one of said strap layers, and a retention component attached to the other strap layer, wherein said retention component has a retention hole for engaging with said button pin and has an access opening which is communicated to said retention hole, wherein two retention pins are mounted in said access opening and are spaced apart from each other to allow said enlarged head portion of said button pin to be squeezed into said retention hole until said two retention pins are engaged with said circular clasping groove.