Sorry JB, I don’t have the current technology to send pictures (button phone & 35mm SLR).
They’re around 20mm tall x 5mm wide, hinged along the whole length on one side, with an “over-centre” type design that clamps the guard onto the blade (quite an interesting design). Presumably they’re made of polypropylene for the hinge to survive frequent flexing.
The one I have is on a Bahco panel saw. Many years ago, I bought several “cut to fit” lengths from Axminster Tools, but they don’t appear to stock it any more.