Articles comprising fibres that change colour when they are stretched, therebygiving an indication of the tension being applied to the article. The presentinvention can be used with a variety of articles which require tension to beappliedto achieve maximum functionality. These articles can include garments, such ascompression garments, shirts, shorts, pants, socks, underwear, or hatsbandages,such as compression bandages shoelaces shoes securities, sutures, ropes orcables.
