This is a sternum/chest strap for a backpack, it hooks onto the piping on
harnesses/shoulder straps. It has a hydration tube clip that attaches it to the
backpack.It has a quick release buckle for quick latch and unlatch.It has
reinforced stitching for durability.It has elastic to secure extra strap.
Attaches as shown in photo. (They are black, not gray)