The high benefits are related to savings throughout all steps in the production, from raising of sheep over spinning and knitting to the final finishing. The data quality for wool production is not optimal [see 5.3.6] - and the variation between different production routes is significant - but high benefits can be achieved for all types of reuse of wool. The benefits from this are most probably lower than those that can be achieved if production of virgin wool can be avoided. This judgment is based on the fact that raising of sheep alone accounts for more than 50% of the climate change impacts in the life cycle of wool and about a third of the energy consumption.