Navy, black, white open jacket, shawl sheer. M or L

This is a unique, untagged shawl (cannot read language in size or material tag) with navy and white sheer ribbed fabric and sheer black material on upper back, sides and sleeves. Open, no buttons, no pockets. New condition. Can be worn over a black dress, skirt, jeans or even as a beach coverup! Was a gift to my mother but not worn.