A belt adjusting and holding device includes: a device body including a belt insertion part allowing insertion of a belt and an opening section communicating with the belt insertion part; and a belt folding member including a grasping part and a folding-back part to fold back the belt within the opening section. The belt folding-back member is configured to move forward and backward within the device body. Standing wall portions rising in a stepped shape are formed on the upper and lower inner wall surfaces of the belt insertion part. The belt folding-back member is formed with a protrusion, which substantially stepwisely bends the belt between the protrusions and the standing wall portions at a backward position of the belt folding-back member and release the belt at a forward position of the belt folding member.

A buckle assembly for selectively connecting first and second straps of a personal protective device. The buckle assembly includes a receiver member and a latch member configured for coupling to a respective one of the straps. The receiver member defines a slot and provides a release arm. The latch member includes a latch tab pivotally connected to a base. In a latched state in which the latch member is disposed within the slot and a latch face is engaged with a capture surface. The release arm disposed over a portion of the latch tab. The latch face can be disengaged from the capture surface in response to an actuation force applied to the release arm. In some embodiments, the receiver member and the latch member incorporate various, complimentary guide surfaces that promote easy insertion of the latch member into the receiver member.

An elastic attachment for a belt having an outer body, an inner body slidingly arranged in an inner compartment of the outer body, and an elastic element that allows the inner body to return to the inner compartment is provided. Advantageously, the elastic attachment provides longitudinal elasticity to the belt to which the elastic attachment is applied without compromising aesthetic appearance of the belt.

A length adjusting device has a guiding track and a controlling assembly. The guiding track has a guiding structure and a locking structure. The controlling assembly has a connecting base, an engaging body, a switch base, a spring, a switch, and a controlling body. The guiding track is mounted between the connecting base and the engaging body. The engaging body is selectively engaged with the guiding track. The switch is combined with the connecting base and has a switching recess. The spring is mounted between and compressed by the engaging body and the switch base. The switch is selectively engaged in the switching recess. The controlling body is mounted on the switch base and has a gear engaged with the guiding track.

A belt adjusting and holding device includes: a device body including a belt insertion part allowing insertion of a belt and an opening section communicating with the belt insertion part; and a belt folding member including a grasping part and a folding-back part to fold back the belt within the opening section. The belt folding-back member is configured to move forward and backward within the device body. Standing wall portions rising in a stepped shape are formed on the upper and lower inner wall surfaces of the belt insertion part. The belt folding-back member is formed with a protrusion, which substantially stepwisely bends the belt between the protrusions and the standing wall portions at a backward position of the belt folding-back member and release the belt at a forward position of the belt folding member.

A clasp assembly that provides a length adjustment mechanism. The clasp assembly is constructed from two components that can be threaded together or apart from each other in order to adjust the length of the clasp assembly. A first component attaches to the first end of a strap, and has a threaded connector for attaching to a second component. The second component includes at least one clasp component to facilitate fastening to the second end of the strap, and has a threaded connector that mates with the first component's threaded connector counterpart. A length adjustment is achieved by rotating the second component relative to the first component to thread them together or apart. Changing the distance between the two components allows adjustment of the fastened length of the clasp assembly and strap for an improved fit.