How does the oversized fit run?

It is cut loose and boxy on purpose, so it drapes rather than hugs. If you want a closer fit, consider sizing down; if you want the intended slouchy look, take your usual size.

Is the fabric warm enough for cold weather?

It is a lightweight crinkle-textured knit, not fleece-lined. It works as a layering piece in mild weather but is thin for deep winter on its own.

What does the half zip do?

The partial front zipper opens to a few inches below the neck, so you can wear it closed for warmth or open over a tee for a relaxed collar.

How should I wash it to keep the print and texture?

Turn it inside out and wash cold on a gentle cycle, then hang or line dry. High heat can dull the print and flatten the crinkle texture.

Is it true to the brown color shown?

The listing names the shade Brown 3, and printed animal patterns often vary slightly between batches. Expect a warm brown base with darker spots rather than an exact photo match.