Ilona Hamer and Peta Heinsen founded Matteau because they wanted simple yet considered swimwear free from unnecessary frills or ruffles, just like this 'The String' bikini top. Made from quick-drying recycled fabric and lined for a little extra support, it has a minimal triangle shape that ties at the back and neck for your perfect fit.Lower-Impact Materials. This product is made using at least 50% lower-impact materials or ingredients. Find out more about our NET SUSTAIN criteria here.