Besides being the industry standard for performance and reliability, Maxell floppy disks offer technological advances for improved data protection. Maxell 3.5" disk features include the patented Dual-Interlocking Flex Shutter , a self-cleaning, multi-layer disk liner to keep the magnetic surface clean and error free, an innovative multi-binding system to help extend laptop battery life and a disk shell that withstands extreme conditions even at temperatures as high as 140 degree F.