If you're planning on shooting under extreme conditions, not just any memory card will do. You need extreme performance, and you'll get it with SanDisk Extreme CompactFlash memory cards. Highly durable, these cards are specially designed to endure the harshest conditions - whether you're at 13 below or 185 degrees F - you'll get every shot. With a minimum of 9MB/sec write and 10MB/sec read speeds, you'll be able to review and download the shots quicker than ever, and recover accidentally deleted pictures with RescuePRO data recovery software, so you can move on to your next challenge worry free. A dedicated technical support line is available for our direct customers of SanDisk Extreme products. Backed by a lifetime warranty