These are separate hoses joined with a gore.
In the Middle Ages, there were two forms of leg covering:a separate hose and a joined hose (which were created in the early 15th century). This part of clothing was well-fitted to the body and covered at least the bottom parts of the legs. Women wore short hoses laced up with a garter under the knee. Hoses could have a full foot or only a stapes (this form was present only among poor people). Separate hoses were laced up to a doublet.