Cold-weather trousers for one bag that are not jeans and do not look like hiking kit

Jeans are heavy, take a day to dry and are cold when damp. Technical trousers are warm and look like you are about to summit something. What actually works, in a city, in winter, out of one bag.

Fabrics that work

• Wool or a wool blend. Warm when damp, does not hold smell, and reads as normal clothing. The best answer if you can find a pair that is not tailored trousers.
• Heavier twill in a dark colour. Looks ordinary, wears well, and hides everything. Slower to dry than wool, faster than denim.
• Fleece-lined or brushed-back cotton. Warm and cheap. Bulky in the bag, which is the trade.

The layering answer, which is what most people converge on
A merino or synthetic base layer under normal trousers beats buying warmer trousers. Two thin things pack smaller than one thick thing, adapt to a range of temperatures, and the base layer doubles as sleepwear. This is the single highest-value change.

Details that decide it

• A soft or partly elastic waistband. Long travel days and a rigid waistband do not go together.
• Zip pockets on at least one side, or you will not stop patting yourself down.
• A dark, matte colour. Sheen is what makes technical fabric look technical.
• Test the dry time before you go. Wash them at home, hang them overnight, see where you stand. Do not learn this in a hotel room.

What to leave: anything with visible ripstop texture, zip-off legs, or a logo above the hem.