Fibre guaranteed not only to resist attack by chlorine-loaded swimming pool water but to offer protection against UV rays when sunbathing, is the latest offer to the international swimwear trade by Trevira. The company's latest promotional campaigns place particular emphasis on the functional advances recently made in the fashion industry. "Our brands are now specifically named to make clear to the trade their functional properties," says Trevira. "For instance, our PET yarn for use in elasticated fabrics is known as Trevira Xpand to stress its shape retention properties.