This is a semi-closed collar, with buttons to hold the wings in place. It can be worn open or with a narrow tie. A covertly formal model of collar used on casual shirts. It works well with a square or slightly elongated face. This is a collar that owes its appearance to the custom among early 20th-century polo players of securing their shirt collars with clips to stop them flying up in the wind. A classic case of how a sporting heritage can become a distinctive feature on a model that has become a defining part of shirt-making history.