The first stretch fabric, of course, was skin. It fit fairly well, withstood wear and tear (scuff marks, lipstick traces, even wine stains vanished in a jiffy), but wrinkled like crazy: a knee bend, for example, caused the stuff to stretch 45%, a shoulder shrug, 16%. After as little as 30 bending, shrugging years, shape was sure to go. Fortunately, skilled technicians got to work on the problem, finally turned up with an ANo. 1 solution called polyurethane elastomeric yarn (spandex) that stretches like skin, leaves no telltale bags or sags, and...
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