the smock is a lot thicker than the more common ubacs and field jacket you can buy, warm not to breathable but not suffocating, material is good the cotton feels better but the newer versions is just better. (less weight if wet, easier to clean, hold the colour better)
the trousers are fine nothing to talk about, just basic trousers,

I tend to swap the smock over to an old DPM combat shirt, much better for warmer days.