Originally hair from the downy undercoat of the Asiatic goat (Capra hircus laniger). Currently similar hair from animals bred selectively from the feral goat population of Australia, New Zealand and Scotland, is also being regarded as cashmere provided the fibre diameter is similar.
Textile Resource (http://www.textile.org.uk)
Soft, silky fiber combed from the cashmere goat. Cashmere has excellent insulating power, providing warmth without weight or bulk. It drapes beautifully, resists wrinkles, and sheds lint. Costly because of limited supply
Textile Links (http://www.textilelinks.com)