Coir is the fibrous material found between the hard,internal shell and the outer coat of a coconut. Other uses of brown coir (made from ripe coconut) are in upholstery padding,sacking and horticulture. White coir, harvested from unripe coconuts, is used for making finer brushes, string, rope and fishing nets.Coir String is a natural fiber extracted from the husk of coconut and used in products such as floor mats,ropes, doormats, brushes, mattresses etc. Technically coir is the fibrous material found between the hard, internal shell and the outer coat of acoconut. Other uses of brown coir (made from ripe coconut) are in upholstery padding, sacking and horticulture. White coir is harvested from unripe coconuts, and is used for making finer brushes, string, rope and fishing nets.