Harness fastening system

A harness fastening system comprising:

• a first strap fastener;
• and
• a second strap fastener attachable to and detachable from the first strap fastener, wherein the second strap fastener comprises:
• a casing body having an opening for passage of the first strap fastener;
• a tongue disposed in the casing body, the tongue comprising a support base and at least one locking portion connected with each other, the support base being further connected with the casing body, the locking portion being elastically deflectable relative to the support base for engaging and disengaging the first strap fastener, the locking portion being engaged with the first strap fastener when the first and second strap fasteners are attached to each other, and the locking portion being disengaged from the first strap fastener when the first strap fastener is detached from the second strap fastener;
• and
• a release actuator movably assembled with the casing body, the release actuator being operable to urge the locking portion to elastically deflect for disengaging from the first strap fastener;
• wherein the first strap fastener comprises a support frame having a receiving cavity delimited at least partially by a bottom plate and a plurality of sidewalls projecting from the bottom plate, the receiving cavity being opened on a surface of the support frame, the support frame further having a first and a second strap slot respectively disposed at two opposite sides of the receiving cavity, the tongue being inserted into the receiving cavity and the support frame covering at least partially an inner cavity of the casing body when the first and second strap fasteners are attached to each other.