With its award-winning and patented design, the CShell® has quietly become one of the most popular ways to cover a compact disc. Whether for your personal CD collection or for business, the CShell® Classic will stand the test of time - and use. We have taken the idea of a "second skin" and made it both practical and attractive. Less than half the weight and thickness of standard "jewel case" CD holder, overcoming the sheer bulk of traditional designs. Constructed of durable polypropylene, overcoming fragility.