A nanofiber forest is described that has been processed to increase a number of nanofibers per unit area (referred to as areal density or, equivalently, density) compared to the nanofiber forest in its as-synthesized state. This increase in areal density is accomplished by physically manipulating a deformable substrate on which the nanofiber forest is disposed. At a high level, this physical manipulation begins by transferring the nanofiber forest from a growth substrate to a deformable substrate. A surface area of the deformable substrate is reduced relative to a surface area of the substrate when the nanofiber forest was attached. This reduction in area causes the nanofibers in the forest to move closer to one another, thus increasing the number of nanofibers per unit area.

Methods of manufacturing a component at least partially from waste yarns. In some embodiments, the waste yarns may be distributed on a surface and bonded to each other on the surface. The component may be least a part of an upper for an article of footwear, an article of apparel, or a sports equipment article.

Methods of manufacturing a component at least partially from waste yarns. In some embodiments, the waste yarns may be distributed on a surface and bonded to each other on the surface. The component may be least a part of an upper for an article of footwear, an article of apparel, or a sports equipment article.

Methods of manufacturing a component at least partially from waste yarns. In some embodiments, the waste yarns may be distributed on a surface and bonded to each other on the surface. The component may be least a part of an upper for an article of footwear, an article of apparel, or a sports equipment article.