FIbreglass
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Science creates a cast that lets you scratch those itches
If you made a list of things that sucked about breaking your arm, the fiberglass cast to heal you would be close to the top. You can't shower with it, you can't get at your skin and you wind up an itchy, sweaty mess for months on end. Three college students out of Illinois believe that they can alleviate some of those bugbears with Cast21, a pretzel-esque sleeve that would replace traditional fiberglass castings.
