The term 'FINE SWEATER MATERIAL' can be summarized by two crossword solutions: ANGORA (6 letters) and CASHMERE (8 letters). ANGORA is a type of wool derived from the ANGORA rabbit, which is native to Turkey. It is known for its softness and warmth. CASHMERE is a type of wool derived from the Kashmir goat, which is native to the Himalayan region. It is known for its luxurious feel and warmth. Both materials are popular choices for sweaters due to their softness and warmth.