A method of manufacturing an article of footwear includes providing a textile and applying heat and/or pressure to the textile using a texturing device to form a textured area of the textile. The textured area is spaced apart from a substantially smooth area of the textile. The method further includes forming at least part of an upper from the textile after applying the heat and/or pressure to the textile. The upper includes a cavity configured to receive a foot. The substantially smooth area is configured to define a reference boundary of the upper. The substantially smooth area and the textured area are each configured to be disposed at predetermined regions of the upper. Furthermore, forming the textured area includes forming a plurality of projection structures that project outward from the reference boundary at varying distances.

The present invention provides a warp-knitted fabric and a medical material that can be simultaneously extended in all directions by causing thread made of a second bioabsorbable material to be absorbed in a living body over time and in which the degree of extension can be increased. The present invention provides a warp-knitted fabric 10 in which adjacent loop rows are linked, the warp-knitted fabric 10 including: a plurality of first loop rows including a first thread and composed of continuous loops extending in the warp direction; and one or two or more second loop rows disposed between the first loop rows and composed of continuous loops extending in the warp direction, wherein each second loop row is formed of one or two or more loops solely including a second thread and one or two or more loops including the first thread, which are arranged alternately, at least three first loop rows are linked together by the first thread, and the bioabsorption rate of the first thread is lower than the bioabsorption rate of the second thread.