EDINBURGH - Researchers in the UK who carried out strength and tear tests to compare recycled jeans with standard jeans found the recycled samples compared well with the standard samples, with the maximum load levels needed to tear the fabrics being of a similar level in terms of tear strength. The findings have implications for brands such as H&M and Levi Strauss who are increasingly marketing recycled denim collections as part of their sustainability efforts. Consumer research has found that there is some concern over the durability of denim that contains recycled cotton textile fibres.