Inner lining bootie comprising membrane material

A method of producing a bootie for an upper of an article of footwear, the method comprising the steps of:

• providing a set of basic pattern pieces comprising a layered structure comprising at least one membrane;
• providing at least one extension piece comprising a thinner and more elastic material than a material of the set of basic pattern pieces, wherein the at least one extension piece is configured to at least partially define a top line of the bootie at an ankle region of a wearer when in use;
• connecting the at least one extension piece to the set of basic pattern pieces along at least one first connection line;
• providing a lining piece;
• stitching the lining piece to the at least one extension piece along a top part of the lining piece at a second connection line, such that the at least one extension piece couples the set of basic pattern pieces and the lining piece;
• and
• flipping over the at least one extension piece towards an inside of the bootie, such that the lining piece covers the at least one first connection line.