The Ile de France sheep breed was stabilised from a Merino bloodline.  It has kept its qualities as a wool breed. The ewes produce between 3 and 4 kg of wool a year, the rams 4 to 6 Kg, for a fineness of wool of 25 to 30 µ. In many countries, wool is still of primordial economic importance. The attraction for « natural » products is an important asset to be developed, which is of interest to the textile industry by an increase in value on the product.