I have lived in black linen trousers this summer . .is there a winter equivalent?

[Twiglett]

or can I continue to wear linen?

I love moleskin jeans

Black or herringbone wide leg wool trousers?
Feel lovely and snuggly when it gets cold - until then, don't see why you have to stop wearing linen??

BVlack combaty style?
River Island do lots of variations.