This jacket is made of a linen-like fabric and can be worn casually. The size is 38, so I've listed it as a Medium. The color is navy. I think it can be worn in the spring. I have a similar jacket, so I haven't had a chance to wear this one, and it's in good condition. Please note that this item has been stored at home for a long time by a private seller, so there may be some overlooked scratches or stains. If you are concerned about this, please refrain from purchasing. Thank you for your understanding. K