Textile fabrics are prone to develop balls of fibre on the surface, which are known as pills. The pills are formed during wear and washing, when fibres on the fabric surface “tease out” and become entangled. Under the influence of the rubbing action these loose fibres develop into small spherical bundles anchored to the fabric by a few unbroken fibres. Such a surface deterioration is generally undesirable, but the degree of consumer tolerance for a given level of pilling will depend on the garment type and fabric end use.