Needling is a mechanical processing technique for joining natural fibers, such as wool or cashmere, onto another fabric, creating a composite, textured material. This process is done through the use of a series of serrated needles that repeatedly penetrate the base fabric and fibers, weaving them together.

Needling is particularly prized for its ability to combine aesthetics and functionality, creating innovative fabrics for clothing and accessories while keeping the characteristics of natural fibers intact.