We all need to store things. Sometimes lots of things. RAW files keep getting bigger, and video bitrates keep climbing, eating up more and more storage space. Thus, memory cards & media has to get bigger to keep up.
This memory card is the top-of-line offering from SanDisk with lighting fast transfer speeds: U3, V30, and class 10. That means download speeds up to ~100 Mb/s and write speeds up to ~90 Mb/s.