Is this coat warm enough for winter?

No. It is an unlined quilted nylon shell with no insulation, so it works as a light layer in spring and fall or over a sweater. For cold weather you need a padded or wool coat underneath or instead.

The nylon taffeta sheds light rain and the storm flaps add protection, but Burberry does not describe it as waterproof or seam-sealed. Treat it as a wind and drizzle layer, not a raincoat.

How does it compare with a classic Burberry cotton trench?

It is lighter, softer and more casual. You get the double-breasted front, storm flaps and belt, but in quilted nylon instead of gabardine, so it packs smaller and feels less structured and less formal.

What is detachable on it?

The flap at the spread collar and the cinch belt both detach, so you can wear it belted or loose and with or without the collar flap.

Does it run true to size?

It is cut as a long, relaxed trench with raglan sleeves, so it layers over a sweater. Shoppers who want a closer fit over light clothing often go down a size.