Is this jacket warm enough for winter?

It is a lightweight down layer, so it suits mild winter days, active use or wearing under a shell. For freezing conditions, plan to layer it.

Can the sleeves really be removed?

Yes. The sleeves detach so the jacket can be worn as a down vest, which is the main reason to choose it over a fixed-sleeve puffer.

How should I wash it?

It is machine washable. Use a down-specific detergent, skip fabric softener, and tumble dry low with dryer balls to restore loft.

Does it run true to size?

Moncler sizing tends to run small and the Grenoble line is cut for layering. Check the size chart and consider sizing up if you plan to wear a midlayer underneath.

No. The shell is water-repellent, which handles light snow and drizzle, but it is not a waterproof membrane jacket.

What is it best compared with?

Against fixed-sleeve down jackets it trades some warmth for versatility and packability. Against heavier Grenoble ski jackets it is the lighter layering option.