STIL Data Protection cases are made of 100% polypropylene, transparent and totally inert; ideal for conservation and long-term storage of CD/DVD/Blue-ray. The exclusive inner design of the case assures the disc a position lightly over the bottom so to prevent scratches and damages; the patented fixing system of the disc assures a very good grasp; however, the disc can be easily ejected with the simple pressure of the central hub.