Is this jacket warm enough for real winter?

It is a padded puffer, so it suits cold dry days and layering. There is no stated fill weight, so treat it as a mid-weight jacket rather than a deep-cold parka.

Will it keep me dry in rain or snow?

The shell is 100% polyester with no water-resistant coating mentioned. Light snow is fine; steady rain will soak through, so bring an umbrella or a shell over it.

How does the sizing run?

It comes in S through 3XL. Puffers are cut to layer, so if you want a close fit, size down; if you plan to wear sweaters underneath, take your usual size.

Can the faux fur trim be removed?

Nothing in the product details says the trim detaches. Assume it is fixed, and spot clean it rather than machine washing the hood.

How should I wash it?

Polyester padding clumps when treated roughly. Wash cold on a gentle cycle, skip fabric softener, and tumble low with dryer balls to redistribute the fill.