Philips DVD+R Double Layer disc offers 8.5 gigabytes or 4 hours of write-once storage capacity, with up to 8X writing speeds. Double Layer nearly doubles the storage capacity of a standard DVD with two recording layers on a single-sided disc so there is no need to flip the disc. It is great to backup games and movies. Philips, the inventor of the CD/DVD technology offers high-quality, highly reliable qualified media.