I insist they alter into their 'play' clothes when they get home from school and opt to go outside.
By the 1980s, almost all garments are marked with cleaning instructions and material content, unless the label has been intentionally removed by hmo's owner. http://ttp//worldlistpro.com%2Fstory19753354%2Fgearing-up-for-fitness-with-online-sports-apparel/