My cold weather clothing consists basically of three layers: short-
sleeved cycling jersey, fleece top and a rain/wind jacket.

The rain jacket that I have has two layers, the outer shell of a
material similar to GoreTex and the inner layer, which is a sort of
a "mesh", something like the inner mesh of a tent, just a bit more
dense. The jacket weights 500 g, after I removed the hood, which I
never use. To get some more weight off the jacket I thought of two
things: (1) removing the pockets and (2) removing the inner layer - the
mesh.

Since removing these parts would be an "irreversible" process, before I
go on with it I would like to know if this is a good idea - I mean, do
the pockets and the inner mesh serve some important function that I am
not aware of.

Thanks for your replies!

Igor.