Backplate, in 3mm salt water resistant aluminium alloy with edges bevelled on a NC cutter. It is not possible to take the new QUICK-FIX stainless-steel buckles apart, it is not openable. You can only adjust the harness by pulling the strap. Complete set contains of - backplate AL, 3mm - PA harness - 2x QUICK-FIX stainless-steel buckles - stainless-steel D-rings and stoppers - stainless-steel buckle - complete crotch strap - pocket with knife