A hair fastener in the form of a hair claw comprising a first claw member , a second claw member and an elongate block , wherein: - each of the first and second claws is provided with a front portion , a rear portion and a joint portion arranged in between, the rear portions of the first and second claw members acting as a pair of handles for controlling opening or closure of the hair fastener, - the elongate block is positioned between the first and second claw members at the joint portions thus acting as a hinge at which the first and second claw members are pivotably and reciprocatingly movable with respect to each other, - the elongate block is made of essentially polymeric materials and provided with a front region and a rear region, - the front region includes a plurality of tension cables , and a clearance is provided between the tension cables and the rear region such that the tension cables and the rear region can operate independently of each other, - the elongate block is adapted to assume a first configuration in which as the handles are moved towards each other the rear region is compressed and the tension cables are stretched, and a second configuration in which as the handles are released the tension cables pull the first and second claw members towards each other thus returning the hair fastener to a closed or default state, and - each of the joint portions of the claw members is provided with an opening defining a rim , and the elongate block is provided with an upper circumferential groove and a lower circumferential groove formed at opposite ends thereof, and the elongate block fixedly connects to the first and second claw members with the grooves engaged to the rims . - each of the first and second claws is provided with a front portion , a rear portion and a joint portion arranged in between, the rear portions of the first and second claw members acting as a pair of handles for controlling opening or closure of the hair fastener, - the elongate block is positioned between the first and second claw members at the joint portions thus acting as a hinge at which the first and second claw members are pivotably and reciprocatingly movable with respect to each other, - the elongate block is made of essentially polymeric materials and provided with a front region and a rear region, - the front region includes a plurality of tension cables , and a clearance is provided between the tension cables and the rear region such that the tension cables and the rear region can operate independently of each other, - the elongate block is adapted to assume a first configuration in which as the handles are moved towards each other the rear region is compressed and the tension cables are stretched, and a second configuration in which as the handles are released the tension cables pull the first and second claw members towards each other thus returning the hair fastener to a closed or default state, and - each of the joint portions of the claw members is provided with an opening defining a rim , and the elongate block is provided with an upper circumferential groove and a lower circumferential groove formed at opposite ends thereof, and the elongate block fixedly connects to the first and second claw members with the grooves engaged to the rims . <EOS>