[soldiers301]

this is a tact vest http://www.army.forces.gc.ca/Chief_L.../2/2711_e.asp#
and the straps on the back are for other pouches to attach too.

The vest in the picture is not a Canadian T.V. It is even not made with real CADPAT material. The strap you`re talking about is much more smaller on the real one.

Here is the issued one :