Insulation fibers

thumb|A linen handkerchief with [[drawn thread work around the edges]] thumb|upright|Linen cloth recovered from Qumran Cave 1 near the [[Dead Sea]] thumb|Flax stem, fiber, yarn, and woven and knitted linen textiles

right|thumb|A close-up view of coir fibre right|thumb|Segregation of coir fibre Coir (), also called coconut fibre, is a natural fibre extracted from the outer husk of coconut, used in products such as floor mats, doormats, brushes, and mattresses, as well as horticulturally in potting mixes and soil amendments. In some countries it is locally called coprah (not to be confused with copra, a dry coconut meat). Coir is the fibrous material found between the hard, internal shell and the outer coat of a coconut. Brown coir, made from ripe coconut, is further used in upholstery padding, sacking, an

structural fibres spun from melted basalt

part of a plant