Yes, the mesh is the metal mesh. All of the bands/straps for the Chronostops have a rather crude adjustment feature involving a screw that is loosened (and then re-tightened) to achieve the desired fit. Below are some photos of them.
As for alternatives, there are very few watches that function like the Chronostop. I think Lemania marketed one (it is a Lemania movement in the Chronostop, albeit branded Omega - they were part of the same group then, and are again now)
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