coir

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, and horticulture, and white coir, from unripe coconut, for making finer brushes, string, rope, and fishing nets. Coir will float in water, so can be used in long lengths in deep water without adding weight that might drag down boats and buoys.

Coir must not be confused with coir pith, which is the powdery, spongy material resulting from the processing of the coir fibre. Pith is chemically similar to coir, but contains much shorter fibers. The name coco peat may refer either to coir or the pith or a mixture, as both have good water-retaining properties as a substitute for peat.