Abstract: A webbing strap device of adjustable length include an adjustment strap anchor, an adjustment loop anchor with an adjustment loop eyelet, a ladder-shaped sliding body with a first frame crossbar, a second frame crossbar spaced from the first frame crossbar and at least two intermediate crossbars arranged between the first frame crossbar and the second frame crossbar, and a webbing strap attached to the first frame crossbar and to the adjustment strap anchor. The webbing strap extends through the slider between the at least two intermediate crossbars to form an adjustment loop. In the region of the adjustment loop, the webbing strap extends through the adjustment loop eyelet.