Is this jacket warm enough for winter?

No. It is an unlined cotton canvas layer meant for spring, fall and cool evenings. In winter it works as a mid-layer under a coat, not as outerwear on its own.

How does it fit compared with a denim jacket?

It follows a workwear cut with a bit more room through the body and shoulder than a slim trucker jacket. Size down if you want it close-fitting and plan to wear only a tee underneath.

Can the cream canvas be cleaned?

Cotton canvas can be spot-cleaned and, depending on the care label, washed cold and hung to dry. Check the label first, and treat grease marks promptly since pale canvas holds stains.

What do I wear it with?

Dark denim, navy chinos and grey knitwear set off the cream color. Avoid pairing it with other pale canvas pieces, which makes marks and creasing more obvious.

Is it a real work jacket?

It borrows the chore-coat shape but is a fashion piece. The cotton canvas is lighter and less abrasion-resistant than heavy duck workwear, so treat it as a casual layer.