The test method for colour fastness of textiles to compound action for perspiration and sunlight (JIS L 0888-1977) authorized now has been recognized to be not necessarily suitable for quality appraisement of sports wear. Recently, it has been pointed out that even if the textiles passed in this test often appreciably changed in colour in practical end-uses.
　In this study, the new test method for colour fastness of sports wear to compound action for perspiration and sunlight more suitable for quality appraisement of textiles was investigated by studying the relations between the observation of the colour change and various testing conditions: oxidation-reduction potential, pH, composition, stability and practical end-uses.
　For the results, it can be concluded that new method for testing of colour fastness to perspiration-light would be most suitable for assessing the quality appraisement of sports wear in practical end uses.

DESCENTE SPORTS SCIENCE Vol.7/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE